Shannen Doherty's 'Charmed' co-star Holly Marie Combs says actress 'promised to haunt me' when she died

Holly Marie Combs is saying goodbye to her friend one week after her death.

In a recent Instagram post, Combs shared a slideshow of photos featuring Shannen Doherty over the years, writing, "It's been one week and it feels like forever." The slideshow includes photos of Doherty around the house, singing on stage, on the set of "Charmed" and hanging out with Combs and other friends.

"I spent all day looking for one particular picture and found just about every picture but that one," Combs wrote in the caption.