|Episode(s)||7.05 Shut Up, Dr. Phil|
Don is a witch. He has been in a relationship with Maggie Stark for over 800 years. He is a property developer. Maggie believed that Don slept with a member of the Medici Family at some point during the Italian Renaissance, but he denies it.
Maggie Stark has separated from Don after learning of his affair with Wendy Goodson. In her anger, she is killing people associated with Don through spells mediated by placing a magical coin near them. Don strikes back, ruining her charity art auction and killing her best friend. Finally, Maggie and Don reconcile after some relationship advice from Sam and Dean. However Maggie still tries to kill them, thwarted only by Don retrieving the hex coins from their motel room. At the same time he saves their lives by performing a binding spell on the leviathan trying to kill them, telling them to find a bottomless pit to throw him in since the spell will only last a few days.