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.
Proof centers on Dr. Carolyn Tyler, a skeptical, hard-science, brilliant surgeon with a caustic edge who has been struggling with the devastating loss of her teenage son and a growing estrangement from her surviving daughter. She is persuaded to investigate cases of reincarnation, out-of-body experiences, hauntings - all of it looking for verifiable proof to answer one of life's greatest questions: Is passing truly the end, or is there something else beyond?