The crime scene is located in a dimly lit corner of an abandoned warehouse, with a bloodied body of a middle-aged man slumped against a stack of wooden pallets. There are signs of a struggle, along with a broken glass bottle and a conspicuous trail of footprints. The primary suspects include: (1) John, the victim's business partner, known to have a heated relationship with the deceased; (2) Emily, the estranged wife of the victim, who recently filed for divorce and may be seeking revenge; (3) Tim, the mysterious neighbor from across the way, who has a criminal past and was spotted near the warehouse on the night of the murder.
Imagine you are a detective in a murder mystery novel. Describe the crime scene and the primary suspects.