8x13 - Dark Shadows

Philip tries to strangle Megan, David stops him. David, now under the influence of the Leviathans, gives Philip and Megan instructions. Julia, Chris and David hold a seance to contact the spirit of Quentin. Paul Stoddard receives a message that payment will be due December 4th; he becomes further upset when he finds that he has the mark of the Leviathans on his wrist.