Waking the Dead
Shadowplay (1) (4x11)
: 15, 2004
A young woman with a history of psychiatric problems kills her family by setting the family home on fire. She admits to the crime, but claims that she was coerced in to doing it by a mysterious character known only by the name 'The Shepherd'.
Her psychiartrist links her case to similar cases and gets the Cold Case Squad involved.