Carolyn and her team investigate the case of an Iraq war vet who claims to have PTSD from a past life experience during the Korean War. Carolyn reconnects with a medical school colleague turned "regression therapist.".

When a Jane Doe wakes up in the coma ward with no memory of who she is, Cat and her team are stunned to find that she has memories that belong to other deceased coma patients. Len and Sophie find a surprising connection to Will.