This comes from a friend of mine that is going organize a code breaker scavenger hunt and this was a sample that he made himself. I have solved it and put the 2 hints that he gave in comments section when it took a while to figure out.
A woman known to be in possession of a stolen necklace of great value was tracked to this hotel room. After taking her into custody, the detectives search the premises. They find several items, including a bronze key (worn around the edges), a book on seafaring (pages 13, 22, and 37 had been cut out), a diving knife (exceedingly sharp) , and a calendar. The suspect was extremely meticulous had marked several appointments in her calendar. The most common events were meetings with a Benjamin Mano. She had appointments with this person scheduled for Sunday at exactly midnight, Monday at 4:35:23PM, Wednesday at 11:05:56PM, Thursday at 3:04:24AM, Friday at 6:25:32PM, and Saturday at 2:44:30AM. Written in
Although she left no notes on the meetings, and officers were unable to ever interrogate Mano, using this information, they found the stolen necklace. Where was the necklace located?