Rather than airing the two new episodes from writer Neil Cross as a miniseries, BBC America has opted to air them both in one night, reported Digital Spy.
A three-hour block of Luther has been slotted as a holiday special on Thursday, December 17.
BBC One in the UK is expected to air the all-new "Luther" installments next month as well.
DCI John Luther is called out of seclusion for this two-episode arc to track down a serial killer with cannibalistic tendencies.
Luther will cross paths with tech expert Benny Silver (Michael Smiley) and high-ranking cop Martin Schenk (Dermot Crowley) once again as he pursues this new case.