John Lavelle

A message in blood left by a murdered officer leads NCIS to a manuscript that may contain classified information.

Grover's parents and brother arrive in Oahu for Thanksgiving; a thief is crushed to death by an empty safe

Is Karl Haas a hero or a traitor and thief? When he ends up in the morgue, it starts an explosive chain of events with Henry and Jo racing to track not just a murderer, but also to solve a decades old notorious art crime.

When robbers strike a diamond exchange and take hostages, the team thinks the culprits are copying a convict's criminal strategies.

Tommy involves himself in Jimmy and Kevin's bookmaking scheme when he realizes the guy about to get busted is his friend Maxwell (John Lavelle); Jenny learns about her father's (Kevin Conway) medical condition when the diner receipts go missing.