Article continues below advertisementMacaulay Culkin got vulnerable while discussing the death of late costar Catherine O'Hara, who famously played his mother in the iconic 1990 film Home Alone."When Catherine passed away in January, that hit me," Culkin expressed in a new interview, noting he was in shock over the unexpected tragedy.Article continues below advertisement'I Feel Like I Owed Her a Favor'Tap Here To Add Ok Magazine as A Trusted SourceSource: megaMacaulay Culkin feels he had 'unfinished business' with late costar Catherine O'Hara.