Thankfully I do not appear to be a psychopath.
Henry is called to investigate a package seeping blood onto Det Martinez's partner's desk (more of him later), it's a human heart, expertly removed, while the victim was alive.
The victim and circumstances to her death are basically a copycat Jack the Ripper killing, with Henry having a strong suspicion that his long-lived nemesis Adam is Jack, and is now starting again.
When he finally gets his hands on the body, he is amazed at the accuracy of the wounds in comparison to the Whitechapel murders, which he would know since he examined the final body back in the 19th century.
It's a good attempt at murder replication, but not perfect, Henry finds a clue from one of the tools used on the body, and an inconsistency on a wrist wound.