Maggie Siff On Returning To Haunt Don's Dreams In The 'Mad Men' Premiere - http://ift.tt/1GjLCcY Warning: This interview contains spoilers for “Severance,” the eighth episode of the final season of “Mad Men.” “I’m glad it’s out there in the world,” Maggie Siff told HuffPost Entertainment on Monday afternoon. “I feel like I’ve been sitting on my demise for a long time....

Maggie Siff On Returning To Haunt Don's Dreams In The 'Mad Men' Premiere - http://ift.tt/1GjLCcY Warning: This interview contains spoilers for “Severance,” the eighth episode of the final season of “Mad Men.” “I’m glad it’s out there in the world,” Maggie Siff told HuffPost Entertainment on Monday afternoon. “I feel like I’ve been sitting on my demise for a long time....