NCIS Season 1 Episode 10

A Jane Doe crawls out of a shallow grave in a park, with virtually total amnesia caused by a blow on the head and the emotional trauma of live burial, unlikely to recover fast or completely, yet tells the police, which calls the NCIS, about a bomb on an unspecified US Navy ship. She wasn't raped but gets memory flashes, first about a church. She pretends to recall her name and address to grant the permission to leave the hospital, and then is taken in by Caitlin 'Kate' Todd who keeps trying to trigger her memory about the bomb. A magnetic hotel key and the chemicals required for a serious explosive are found in the grave. Micro-laser numbering traces the key to the Jackson hotel in Washington, notably Mr. Walter Richter's year long-leased suite; it contains his corps, fitting Jane Doe's description of her attacker, but he is dead too long and worked for a German bomb detection equipment company...