Supernatural's "Swan Song" is hailed as Eric Kripke's perfect finale to the series, but his ending is actually much darker and unsatisfying.

Supernatural season 15, the final season of the beloved show, marked the conclusion of Sam (Jared Padalecki) and Dean Winchester’s (Jensen Ackles) 15-year-long journey.

The Winchesters might have lasted for more than one season if it had revealed its true connection to Supernatural at the ...