Liam is a known stalker who Juliana has filed a restraining order against. Liam was said to be at the dog park at the time of the murder but had no one to verify his story. Liam has denied all acusations and has said he would never do anything to hurt Juliana. Liam owns a knife set but not the one used in the murder.
UPDATE: Video cameras show liam at the dog park at the time after the murder but not during the time of the murder. He claims he was out of sight of the cameras during the time of the murder.