‘knocking knocking’state the narrative of down-on-his-luck former pugilist Sam Grant, who one nighttime find himself catch in a whirlwind of speculation and riddle as his colorful and far-out neighbor come up to him with chilling narrative of their flat’s cryptic new occupant. inspire by the retro horror classics of VHS years travel by, ‘knocking knocking’, is certain to be a dainty for any horror fan and aficionado.