The team joins forces with the Baltimore P.D after a fire at a warehouse leads to the discovery of classified Navy documents and also, a body which has national security at stake. Meanwhile Tony is reunited with the kid from Baltimore.
The scene opens with a group of firefighters trying to put on a blaze at a warehouse in Baltimore while inside the warehouse, Captain James Marsh tell his men that it's looking good. One firefighter then tells Marsh that he's got something and it turns out to be a dead body which has been burnt beyond recognition.
Marsh then tells someone on his comm that they're going to need the M.E and to send the Arson Unit down to the warehouse as well. The person on the radio copies that, stating that they'll notify the M.E and that the Arson Unit are already on their way.
Marsh suddenly spots a file lying on the ground and tells the firefighter that they better call in the Navy too.
It then cuts to show that the folder Marsh is holding has the Department of the Navy and the word "Classified" on it.
|Leroy Jethro Gibbs||Mark Harmon||Special Agent in charge of the Major Case Response Team, NCIS.|
|Anthony DiNozzo||Michael Weatherly||Senior Special Agent, MCRT, NCIS.|
|Ziva David||Cote de Pablo||Junior Special Agent on the MCRT.|
|Abigail Sciuto||Pauley Perrette||Chief Forensic Specialist, NCIS.|
|Timothy McGee||Sean Murray||Special Agent, MCRT, NCIS.|
|Leon Vance||Rocky Carroll||Director of NCIS.|
|Donald Mallard||David McCallum||Chief Medical Examiner, NCIS.|
|Detective Jason King, BPD||Gaius Charles||Detective in the Homicide Investigation Unit of the Baltimore PD.|
|Captain James Marsh, BFD||James Hanlon||Fire Captain in the Baltimore FD.|
|Bruce Johnson||Peter Kelamis||Baltimore Fire Department's site inspector. Later dies in an explosion.|
|Jack Murdoch||Peter Mackenzie||A man that McGee and Ziva talk to.|
|Billy Wayne||Patrick Stafford||A man serving a life sentence for starting a fire that killed his wife and two children.|
|Mary Gardocki||Louise Griffiths||A woman who visited Billy Wayne in prison.|
|Fireman 1||Michael Lesly||A man who appears in the episode.|
|Young Jason King||Dani Dare||King as a young boy.|
- The team meet Jason King, a member of the Baltimore Arson Unit and a man who DiNozzo saved from a fire in twelve years previously although King's sister died in the fire.
- It's revealed that Carter Plimpton, the dead man is a former member of the Phantom Eight.
- When Abby is studying the fire, Mythbusters is seen on a TV screen opposite the table she's at just before Gibbs comes in.
- This episode marks the start of the story-line concerning terrorist attacks on two Navy ships orchestrated by a businessman-turned-terrorist.