Tracker Season 2 Episode 15 Cast & Guest Star (Photos) - Sofia Pernas, Diana Maria Riva, & Other Actors in 'The Grey Goose'

Tracker Season 2, Episode 15 sees the return of two guest stars from previous seasons: Sofia Pernas and Diana Maria Riva, who are back to help Justin Hartley's Colter Shaw with a complex case. 

CBS' number one show goes back to its roots in "The Grey Goose" by exploring a dangerous case in which Colter enlists the help of familiar allies after an inmate escapes prison to take someone hostage. 

Tracker Season 2, Episode 15 premiered on CBS on March 30. 

Tracker Season 2 Episode 15 Cast Guide: Every Main Star Who Appears 

Rhona Rees - Marge 

Rhona Rees portrays Marge, the prison guard who was beaten up by Justine in the opening moments of the episode.

Rees' notable credits include Yellowjackets, Snowpiercer, and The Dragon Prince.

• Instagram: @rmer
• IMDb: Rhona Rees

Gwenda Lorenzetti - Cassandra 

Gwenda Lorenzetti appears as Cassandra in Tracker Season 2, Episode 15.

Cassandra is Justine's relative, who has access to the stash of cash in the shell company they are trying to rob. 

Lorenzetti also starred in Allegiance, Motherland: Fort Salem, and DC's Legends of Tomorrow. 

• IMDb: Gwenda Lorenzetti

Christina Arcand - Hollander 

Hollander is one of the prison guards tasked with looking after Billie while she goes undercover. The character is played on-screen by Christina Arcand. 

Tracker is Arcand's first major on-screen credit.

• Instagram: @christinaarcand
• IMDb: Christina Arcand

Laura Patalano - Mamma Roach

Mamma Roach (played by Laura Patalano) is a crime boss inside the prison who has guards in her pockets to do her bidding. 

She orchestrates Justine's escape so they can retrieve a huge stash of money outside. 

Patalano is known for her roles in This Fool, The L Word: Generation Q, and Gentefied.

• Instagram: @lpatalano
• IMDb: Laura Patalano

Camille Hollett-French - Justine

Camille Hollett-French brings Justine to life in Tracker's new episode. 

Justine is the inmate who escaped and teamed up with Rachel to steal money from her relative's company. 

Hollett-French's past credits include So Help Me Todd, Big Sky, and Motherland: Fort Salem.

• Instagram: @thiscity0fmine
• IMDb: Camille Hollett-French

Nikki Crawford - Miggy

Joining the cast of Tracker Season 2, Episode 15 is Nikki Crawford as Miggy, Justine's cellmate who is involved in a web of lies inside the prison. 

As a Tony-nominated and Obie award-winning actress, Crawford is best known for her roles in 9-1-1, Criminal Minds, and NCIS: Los Angeles.

She is also part of the star-studded cast of Prime Video's Cruel Intentions. 

• Instagram: @nikkicrawford917
• Wikipedia: Nikki Crawford
• IMDb: Nikki Crawford

Carlena Britch - Rachel Sherwood

Carlena Britch guest stars in Tracker Season 2's new episode as Rachel Sherwood. 

Rachel is Detective Brock's niece, who was seemingly abducted by the escaped inmate, Justine. 

It is later revealed that she is in cahoots with the prisoners because they want to steal a stash of money outside.

Britch has credits in Another Life, The X-Files, and The Twilight Zone. 

• Instagram: @carlenabritch
• IMDb: Carlena Britch

Chris Lee - Randy

Chris Lee's Randy continues to serve as Bobby's replacement in Tracker Season 2 (here's why fans think his inclusion is a mistake). 

As Colter's guy-in-the-chair (and resident hacker), Randy helps him track down a phone number that may help Detective Brock and Colter unlock the missing link to find the former's missing niece. 

Lee previously appeared in The Chi, Legacies, and Play Dead. 

• Instagram: @theofficialchrislee
• IMDb: Chris Lee 

Diana Maria Riva - Detective Helen Brock

Diana Maria Riva returns as Detective Helen Brock in Tracker Season 2, Episode 15. 

Detective Brock was instrumental in helping Colter crack the case in Tracker Season 1, Episode 6. 

In the new installment, Colter Shaw travels back to Aurora, Vermont, after Detective Brock asks for his help in finding a missing prisoner (Justine) who has escaped from jail and is considered dangerous. 

She is also concerned about her niece, who has also gone missing. 

Riva is no stranger to playing detective since she portrayed Detective Ana Perez in Dead To Me. 

The actress also appeared in Glamorous, Gordita Chronicles, and Sunnyside.

• Instagram: @dianamariariva
• Wikipedia: Diana Maria Riva
• IMDb: Diana Maria Riva

Sofia Pernas - Billie Matalon

Sofia Pernas, who is also Tracker lead star Justin Hartley's wife in real life, is back to portray Colter Shaw's fellow rewards seeker and rival, Billie Matalon. 

After Colter essentially saved her life in Tracker Season 2, Episode 3 (read more about its full cast here), Billie owes him a favor. 

As a result, Colter asks Billie to go undercover inside a women's prison to ask for details from the inmates about the missing prisoner.

In addition to being a notable guest star in Tracker, Pernas played prominent roles as part of the cast of Suits LA, Blood & Treasure, Quantum Leap, and Operation Rogue.

• Instagram: @sofiapernas
• Wikipedia: Sofia Pernas
• IMDb: Sofia Pernas

Here are the other main actors who appeared in Tracker Season 2, Episode 15:

• Justin Hartley - Colter Shaw
• Fiona Rene - Reenie Greene
• Abby McEnany - Velma Bruin

New episodes of Tracker Season 2 premiere every Sunday on CBS at 8 p.m. ET and can be streamed the next day on Paramount+.