Julie Zhan

Hanna's new interest in crime novels helps her to come up with a plan to try and figure out whose body is in Ali's grave. While Hanna is on her hunt, Spencer is working overtime to decipher the stories in Ali's diary which she hopes will reveal the identity of Ali's mystery man. But with both girls hot on the trail, will their work lead them straight into the path of "A"? Meanwhile, Aria is upset with the new friend Mike (recurring guest star CODY ALLEN CHRISTIAN) has made and Emily's dad (recurring guest star ERIC STEINBERG) is concerned about her behavior.

When Nadine's father comes to town for her birthday, Devon enlists help to ensure that he makes the best first impression; Red Rock decides to cut the entire OBGYN department; Nic cares for a teenage patient whose condition is deteriorating.

The NCIS team partners with the FBI to locate a terrorist cell in Los Angeles believed to be preparing for an imminent attack.

The team continues to search for a terrorist cell in Los Angeles; Callen and Sam remain trapped in a movie theater after multiple bombs have detonated, and every remaining exit is wired with explosives.