Episode   Credits   Transcript    
Episode No.   Season
51 4x07 IV
Original Broadcast Date August 19, 2011 FlagIconCA-small
August 19, 2011 FlagIconUSA-small
November 19, 2012 FlagIconUK-small
Written By
Directed By
Chronological Information
Preceded By  ←
Followed By  →


Spike has to leave his dying father's bedside to investigate a bomb threat at a nearby research and development company. Apparently, a security guard found a strange bag with wires hidden in a garbage bag and called it in. The building was being evacuated but the people on the lower levels refuse to leave , believing that they are experiencing a fire drill. When Sam finds another bag near the room they're in, he tries to get the civilians out. Two bombs go off, trapping everyone underground. No one was killed but one woman was pinned by rubble. Spike then finds a larger, more complex chemical bomb rigged with infrared and motion sensors, estimated to produce a bigger explosion. SRU then gets a call from a potential bomber, but it is apparent that he's not the culprit as the bomb is too complex. Police then come knocking at his door. Turns out, the culprit is one of the civilians trapped underground, determined to get revenge after the research and development firm he worked for framed him for selling out company secrets when their stock dropped. Spike is able to intuitively figure out that the code for deactivating the bomb is the bomber's mother's name numerically. Having saved the day, Spike returns to his father's side.


Hugh Dillon as Ed Lane
Amy Jo Johnson as Julianna 'Jules' Callaghan
David Paetkau as Sam Braddock
Sergio Di Zio as Mike 'Spike' Scarlatti
Clé Bennett as Rafik 'Raf' Rousseau
Enrico Colantoni as Gregory 'Greg' Parker


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