Law & Order: Criminal Intent (2001)

S9E10 Disciple

A recent murder bears striking similarities to the methods of a notorious serial killer who was put to death months prior. Detective Stevens is faced with a daunting challenge: to determine whether this is the work of a copycat or if she inadvertently helped convict an innocent person. As she delves deeper into the investigation, she must confront her own doubts and unravel the truth behind the chilling resemblance between the two cases.