Absolute Batman Has A Jaw-Dropping Twist On Harley Quinn And The Joker's Relationship

Absolute Batman issue #22, titled The Crooked House, gives the relationship between Harley Quinn and The Joker a new twist.
Polygon

Joker: Folie à Deux flips the script on Harley Quinn — but not on Todd Phillips’ problems writing women

Todd Phillips’ Joker sequel, Joker: Folie à Deux, is catching flak from fans for deviating from perceived canon — both the various comics versions of longtime Batman villain Joker, and what fans ...
Screen Rant on MSN

It's confirmed, Harley Quinn's wild origin change makes her Joker's daughter

DC gives Harley Quinn her boldest origin yet, abandoning her past ties to the Joker by officially making her his biological daughter.
Psychology Today

Folie á Deux: Joker, Harley, and the Folly of Two

A person suffering from shared psychotic disorder—also known as shared psychosis and originally known as folie á deux (literally French for "madness of two" but often called "folly of two" in English) ...