TRACKER Season 3 Episode 21 airs tonight as Colter Shaw (Justin Hartley) and Russell Shaw (Jensen Ackles) reunite for a deeply personal mission to uncover the truth behind their father’s mysterious work, setting up what looks like one of the season’s most important episodes yet.
With long-running family questions coming back into focus, Jensen Ackles returns as Russell Shaw while Jeri Ryan guest stars as Dr. Serena Jukic, adding even more intrigue as Colter and Russell dig deeper into their father’s mysterious past.
Colter and Russell reunite tonight as family secrets resurface — scroll down for all the TRACKER Season 3 Episode 21 photos from “Chrono Stasis.”
TUNE-IN DETAILS
Airs tonight Sunday, May 17 (9:00–10:00 PM ET/PT) on CBS .
Streaming: Paramount+ (live and on demand for Paramount+ Premium subscribers; on demand the next day for Paramount+ Essential subscribers).
More TRACKER Coverage
Previous Episode: https://seat42f.com/tracker-season-3-episode-20-photos-reclamation/ Previous Episode Recap & Ending Explained: https://seat42f.com/tracker-season-3-episode-20-recap-ending-explained/ More TRACKER Coverage: https://seat42f.com/tag/tracker/
EPISODE CREDITS
Written by: Sharon Lee Watson & Amanda MortlockDirected by: Jeff T. Thomas
Guest Stars: Jeri Ryan
ABOUT THE SERIES
Justin Hartley returns as Colter Shaw, the lone-wolf survivalist and reward seeker at the center of the hit drama TRACKER , now the #1 show on television. After the explosive revelations of last season’s finale, Colter is still grappling with long-buried truths surrounding his family. But with the support of his trusted team, he continues to do what he does best: locate the missing, expose the truth, and fight for those who can’t fight for themselves.
Tracker continues to be produced by 20th Television , with executive producers Justin Hartley , Ken Olin, Elwood Reid, Connie Dolphin, Sharon Lee Watson and Alex Katsnelson driving the creative vision behind the series.
TRACKER Season 3 Episode 21 Photos Jensen Ackles Returns in “Chrono Stasis”
Tracker Season 3 Episode 21 “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Jensen Ackles as Russell Shaw and Justin Hartley as Colter Shaw. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
Tracker Season 3 Episode 21 “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Jerry Trimble as Paul. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
BTS “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: A-Cam Operator Vlad Horodinca, Justin Hartley and Jensen Ackles. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
BTS “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Justin Hartley. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
BTS “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Director Jeff T. Thomas. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
Tracker Season 3 Episode 21 “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Jensen Ackles and Justin Hartley. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
Tracker Season 3 Episode 21 “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Justin Hartley and Jensen Ackles. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
Tracker Season 3 Episode 21 “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Jerry Trimble as Paul. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
Tracker Season 3 Episode 21 “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Jerry Trimble as Paul. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
Tracker Season 3 Episode 21 “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Jeri Ryan as Dr. Serena Jukic. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
Tracker Season 3 Episode 21 “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Jensen Ackles as Russell Shaw and Justin Hartley as Colter Shaw. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
Tracker Season 3 Episode 21 “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Jensen Ackles as Russell Shaw. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
Tracker Season 3 Episode 21 “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Justin Hartley as Colter Shaw. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
Tracker Season 3 Episode 21 “Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Justin Hartley as Colter Shaw. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
“Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Justin Hartley as Colter Shaw and Jensen Ackles as Russell Shaw. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
“Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Jensen Ackles as Russell Shaw. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
“Chrono Stasis” – Colter and Russell unite in a personal mission to uncover their father’s mysterious work, on the CBS Original series TRACKER, Sunday, May 17 (9:00-10:00 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+. Pictured: Justin Hartley as Colter Shaw and Jensen Ackles as Russell Shaw. Photo: Darko Sikman/CBS ©2026 CBS Broadcasting, Inc. All Rights Reserved.
Editor-in-Chief | Seat42F, a leading source of entertainment news, information, television and movie resources.