S1, E4: Kris Mohandie and Derrick Levasseur raise questions about the validity of the potential person of interest's alibi from the night of the murders: was the truth being told, and if not, did this individual play a role in committing the crimes?

S1, E4: Kris Mohandie and Derrick Levasseur raise questions about the validity of the potential person of interest's alibi from the night of the murders: was the truth being told, and if not, did this individual play a role in committing the crimes?