Continuity mistake: When Allie takes a photo of the "perfect roomate", the roomate's pose in the photo doesn't match her pose and position at the time taken.
Continuity mistake: When Heddy leaves the shower nude after assaulting Graham, she wraps a towel around herself while talking to Allie. She walks into the bedroom with Allie following her in talking, and in the next interior bedroom shot, Heddy is instantaneously wearing a robe over a nightgown.
Continuity mistake: When Allie gets up from the bed to go down the hall to the answer machine she is totally nude. When she comes back and reaches around the corner for a towel she has underwear on.
Answer: Because his body hadn't been found yet, It was still early in the morning.
Of course, his body had been found - it was all over the news.