Agatha Christie's Wedding Ring

Origin
Dame Agatha Mary Clarissa Christie was a renowned author and is hailed as the Queen of Murder Mystery. Between 1920 and 1976 she authored 66 detective novels and many short stories, mostly focused on murder mysteries and crimes. In late 1926, her husband Archibald Christie asked her for a divorce, as he was in love with a woman named Nancy Neele. Shamed and betrayed, Agatha ran off in the night and remained missing for eleven days. No accounts of her activity during this time exist, butit has been speculated that it was an attempt to frame her husband for her murder as an act of revenge. The Christies divorced officially in 1928 and Agatha retained custody of their daughter and kept her married name for her writing.

Effects
The diamond ring from Agatha's first marriage became an artifact born from both spite and passion. Seeminly integrating her desire to see her ex-huband ruined and her love of crime and mystery, the ring has the ability to cause people in the area to act upon hidden or repressed feelings of anger, humiliation and jealousy. These emotions blossom as violent behaviour, eventually culminating in murderous acts. The individuals, however, are also filled with cunning and will go out of their way to hide their crime. This can extend to becoming an impressive liar to framing another for the crime. These augamented traits are so impressive that none but the most skilled detective could call them out, though with advancements in crime-fighting technology such things are considerably more easier to solve.

An interesting facet of the ring is that it's one of the few artifacts known to be completely passive when in use, that is to say, being worn. While on someones finger, it may be considered completely neutalized. Because of this, it is the duty of the Caretaker to wear the ring at all times to prevent it's destructive effects from interfering with the Warehouse staff.