Agents of and The Marvelous Mrs Maisel star Joel Johnstone has been cast in season two of CSI: Vegas.
The actor, who has played Ott and Archie Cleary in the two shows respectively, will portray an assistant Medical Examiner called Jack, who is both "intelligent, curious and optimistic," according to Deadline.
Sara Amini (The Future) has been cast in the role of Jack's younger sister, Sonya, who is head Medical Examiner and described as "regimented, methodical, and passionate".
Related: CSI: Vegas set to bring back original character after cast exits
The new casting comes just a few months after Mayans MC star Lex Medlin and Helstrom's Ariana Guerra were announced to play newcomers Beau and Serena respectively.
Medlin's character, Beau (who's a husband and a dad of four kids), spent the past 20 years as one of Dow Chemical's best research scientists and has decided to put his efforts to better use following the pandemic.
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Meanwhile, Guerra will step into the shoes of an unfiltered "tough-skinned cynic," who's also the daughter of cops and a sibling to doctors. Serena is "not content to let science lead the way without some saucy commentary and tough questions".
Related: CSI: Vegas star William Petersen briefly hospitalised due to exhaustion on set
CSI: Vegas has had to deal with a number of exits since season two was announced, including William Petersen, Jorja Fox and supposedly, Mel Rodriguez.
In a statement released at the time of her exit, Fox told fans that she had "decided not to 'Sidle up'" again.
"For me, CSI has always been a love story. The story that people can find love in the darkest of places and times," she explained. "And the story that love, even in the darkest of places and times, can expand and grow roots and endure."
Alluding to Petersen's exit, she added: "I personally just can't split Sara and Grissom up again. So goes Grissom… So goes Sara. Wherever they go, they belong together."
CSI: Vegas airs on CBS in the US. No UK broadcaster has been announced yet.
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Social Executive, Entertainment Portfolio After completing her joint honours degree in Journalism and English Literature at Cardiff University, Iona joined Digital Spy as a Content Production Intern in 2022, where she wrote across both news and features, specialising in TV and movies. Following her internship, Iona continued contributing to the site as a freelance reporter, becoming social executive for the Hearst UK entertainment portfolio in summer 2025. Iona now leads the DS social channels, covering red carpets with stars such as Paul Mescal, Austin Butler, and more.
