Issues #72 and #73 conclude the "California or Death" arc, where Harley investigates the suspicious death of her wrestler friend, Alicia.
The series concluded in 2020 with issues #72 through #75, marking the end of writer Sam Humphries’ acclaimed run on the character. This final arc transitions Harley from a grounded murder mystery in Los Angeles to a reality-bending celebration of her history in a massive series finale. Issue #72–74: The Los Angeles Investigation Harley Quinn 072-075 (2020) (Digital) (Zone-Emp...
: The investigation uncovers a deep conspiracy in Los Angeles involving a cult of wealthy elites, a corrupt developer named Jonathan Wittleson, and a literal "City of Angels" that turns against her. Issues #72 and #73 conclude the "California or
The series concludes with a giant, 38-page celebratory finale that serves as both a "roast" and a psychological deep dive. Issue #72–74: The Los Angeles Investigation : The