12-03-2025
FBI Exclusive: Isobel's Secret Husband Has Been Cast, and It's a Name TVLine Readers Know Very Well(s)
We have an FBI casting news flash that just might bowl you over.
Sources confirm for TVLine exclusively that the well-watched CBS procedural has cast Special Agent in Charge Isobel Castille's husband Phillip, whom no one — not viewers, and not her closest co-workers — knew existed until the Feb. 11 episode.
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Filling the role of series vet Alana de la Garza's on-screen mate will be Tom Cavanagh, who is best known to TV fans for his title role in the 2000 NBC sitcom Ed and of course his many roles on The Flash and the extended Arrowverse.
On The Flash alone, Cavanagh played Harrison Wells (of Earth-1), Eobard Thawne/Reverse-Flash (disguised as Harrison Wells), 'Harry' Wells (of Earth-2), 'H.R.' Wells (of Earth-19), every member of 'the Council of Wells' (and 'the Council of Harrisons'), Sherloque Wells (of Earth-221) and Harrison Nash Wells aka Pariah.
Cavanagh's TV credits also include Love Monkey, Eli Stone, Royal Pains, Scrubs, Trust Me and, most recently, guest spots on Blue Bloods and in the Superman & Lois series finale (though not as any Wells).
The fact that Isobel has a husband was revealed in the episode 'Shelter,' which involved a gunman with ties to a Mexican cartel, who'd opened fire at a homeless shelter. In a private convo with OA (played by Zeeko Zaki) about keeping work and home life separate, Isobel confided, 'I have a husband.'
Phillip, whom she'd wed two months ago at the time, 'has three daughters, so I have three daughters,' she added with a bit of amazement.
Hoping to offer OA guidance with a struggle he was going through at the time, Isobel explained, 'I have learned to leave my personal life outside this building.' Moments later, OA remarked with a grin, 'A husband!,' then asked his boss how it was going. 'No complaints!' she beamed.
The airdate for Cavanagh's FBI debut is currently of TVLine
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