Sam Lucas in Ghost Whisperer, is portrayed Kenneth Mitchell & David Conrad. Sam actually died in an accident soon after Jim. His spirit crossed over, giving Jim the opportunity of taking over his body. As soon as Jim stepped in his mind was wiped out, he got amnesia causing him to forget Melinda and their love. He soon moves into her garage feeling he can only trust her, he had a strong bond with her but doesn't know why. As time progresses he starts getting memories, some Sams', other belonging to Jim he is confused, and tormented until Melinda confesses , "Your memories, the reason that you can't make sense of them is because they're not yours. They belong to a ghost someone who died and then went inside Sam's body. You're not Sam anymore.... you're Jim my husband or at least what's left of him." Of course knowing this causes him to pull away from Melinda breaking her heart.
He was born on July 7,1978. His sister followed 4 years after. As a child, he almost drowned in the lake his family visited. At some point in college he became interested in architecture. He dated Nikki during and after high school on and off, but was never willing to make a commitment.
Melinda's son, Aiden, is given the middle-name of Lucas to commemorate Sam. Sam Lucas becomes a doctor and at some point adds the middle name of James and goes by Jim.