|John C. Reilly||Franklin|
|Ezra Miller||Kevin (Teenager)|
|Jasper Newell||Kevin (6-8 Years)|
|Rocky Duer||Kevin (Toddler)|
|Siobhan Fallon Hogan||Wanda|
Eva Khatchadourian is a travel writer/publisher who gives up her beloved freedom and bohemian lifestyle to have a child with her husband, Franklin . Pregnancy does not seem to agree with Eva, but what's worse, when she does give birth to a baby boy named Kevin, she can't seem to bond with him. When Kevin grows from a fussy, demanding toddler into a sociopathic teen, Eva is forced to deal with the aftermath of her son's horrific act.