Kane Lieu

After the U.S. Treasury Department is hacked, Nell and Eric go undercover inside a couple's retreat to track a tech-savvy husband and wife linked to the crime. Also, Digital Forensics Specialist Dave Flynn (Scott Grimes) arrives from the NCIS cyber office in San Diego to run ops while Eric and Nell are on assignment. Bar Paly guest stars.

The hospital deals with victims of a fire; Guthrie contemplates high-risk surgery to continue his career.

Randall uncovers new truths about his past; Kevin and Randall struggle to reconcile their differences.

Rosie and Villa must establish the true identity of a murder victim who appears to have died three years prior; TMI attempts to reconnect with Pippy; Donna struggles to keep a secret from her family.