March 11, 2011 03:17 PM PST

Scoop: Big Love Starlet Cops CSI: Miami Role

Big Love starlet Cassi Thomson has booked her first post-HBO gig, and it’s a far cry from playing house with the Henricksons.

TVLine has learned exclusively that Thomson has been cast in an upcoming episode of CSI: Miami as Kaylee, a young girl who is forced to drive around with a big bad killer after he hijacks a car.

Thomson’s guest spot is set to air as the second-to-last episode of the CBS hit’s ninth season.

In the meantime, check out Big Love‘s penultimate episode this Sunday at 9/8c.