Dar Dixon

When Los Angeles is swept by a series of blackouts, a serial killer uses the cover of darkness to commit murders.

When a Navy commander's body washes up on shore along with the bodies of two drug runners, Gibbs refuses to believe that the sailor who was killed was dirty.

The team look for a commonality when a series of targeted abductions take place; Savannah is frustrated with Morgan's travelling.

Cristina considers her future at the hospital; Amelia and Derek collaborate on a tough surgery involving conjoined twins; Jo takes on too many cases at once; Stephanie stumbles on the truth about Bailey's case.

Daniel tries to make Emily jealous by reconciling his relationship with Sara, but Emily makes it clear that she will not give up. Patrick seeks answers from Victoria and Emily continues to black out.

Kara goes head-to-head with her Aunt Astra when she challenges her beliefs about her mother. Meanwhile, a hacker exposes Cat's emails.