The main component is Azrael's Blade, which Lucifer recovered earlier in the season.
Two women whom Lucifer recently slept with are found dead. This forces Chloe and Lucifer to interview his long list of past "paramours," leading to a series of awkward and comedic encounters as they search for a common link between the victims. Lucifer S02E1143:15 Min
The second piece is revealed to be a medallion held by a human. The main component is Azrael's Blade, which Lucifer