Murder Mysteries #8

A woman was killed on Christmas day in the afternoon. The police arrived and questioned the suspects. John said he was in the hospital, his wife just gave birth. Molly said she didn’t remember anything that happened. She knew she didn’t kill anyone, though. Marcus said he was returning a gift he got from the mall. Lisa said she was walking her dog like she does every single day. Who is the murderer?

Ans: Marcus. All malls and stores are closed on Christmas day.