Ary Katz

When a female roller derby skater is killed and dismembered, Angie goes undercover to help solve the case; Cam tries to learn more about Booth's secretive hospital appointments.

Curious about what would happen if they slept on the other side of the bed, Jeff and Audrey switch sides, causing Audrey to wind up in hospital.

When Hodges and Wendy take a group of students on a field trip, they embellish their roles in solving cases and take the assignment too far.

When the CSI headquarters are attacked, Horatio is forced to honour a gunman's strange request in order to save hostages.

Karen is happy to be back working with her clients again, and April's new client gets a bit too close for comfort. Plus, someone from Marc's past becomes very present.

Joss relives her trauma when she testifies in Wilson's murder trial, Karen's new nanny makes an inappropriate advance, and April goes into overdrive when Lucy sets off on a school trip.