Dar Dixon

Cristina looks to Meredith for advice as she assesses her future at the hospital. Derek and Amelia work together on a difficult surgery involving conjoined twins. Meanwhile, Jo is spread too thin when she tries to work on several cases at once and Stephanie realizes the truth about Bailey's bubble boy case.

During a series of rolling blackouts, the team tracks a serial killer in Los Angeles who targets families.

The team searches for a commonality when a series of target abductions take place; Savannah is frustrated with Morgan's traveling.

As Kevin stresses about the premiere of his play, he receives support from an unexpected source. Randall struggles under the pressure of both his work and ailing father. Rebecca and Jack's Valentine's Day doesn't go as planned.

Sara Jennings was on her way to the Bahamas via Miami for a class trip when a wild night of partying, drinking and sex got out of control. Now, the CSIs must discover who she was with and what happened that night in order to find her. Meanwhile, Horatio's past in New York City resurfaces when an old unsolved case lands on his desk.

Emily's instability puts everything she has worked for at risk.