Becky O'Donohue

Leonard and Penny experiment with dating again by "beta testing" their relationship, while Raj develops a peculiar relationship with his phone's virtual assistant.

Jane, Lisbon and the team investigate the murder of a fashion designer whose glamour has faded, while Darcy's continuing work on the Panzer case brings Jane's nemesis Red John back on the radar.

When several well-known poker players meet their demise, the CSI team members step in to investigate.

The team takes on the case of a deaf 14-year-old named Seth who collapsed after he started hearing explosions while competing in a wrestling match. When the team tries to test him for seizures, Seth loses vision in one eye, complicating House's bunk theory of `Exploding Head Syndrome'.

The team investigate when it becomes game-over for a referee who was overseeing a computer games tournament. The eventual winner admits that the game is rigged in his favour.

The team's hunt for a serial killer is complicated when it is realised that they may in fact be tracking a killer couple.