Frank Minelli's fedora. He drops it in Metro Circle while being chased by Freddie Mellon. April picks it up and puts it on the garbage in the alleyway behind the Mercury Theatre. The silhouette, together with some vocals from Constable Guybrush, convinces Freddie that Minelli has returned to take his revenge, leaving April free to sneak into the theatre.
Obtained from the middle of the road in Metro Circle.