When Garcia experiences anxiety over a case personal to her from her past, former BAU member Derek Morgan visits to lend emotional support.
Peter must go undercover into the world of corporate espionage after a tech company's head researcher is murdered.
Upon his return from the stress clinic, Alan finds out that Jake got his girlfriend pregnant. Walden and Lyndsey are sleeping together, and he has to move out immediately.
Maura becomes a murder suspect when her date is found dead and she can not remember their evening together; Jane struggles to protect her best friend while doing her job.
The NCIS team is forced to re-examine a hit-and-run murder case when a former FBI agent turned lawyer confides in Gibbs that her client's confidential alibi is solid.