Dizzle_Sizzle’s review published on Letterboxd:
Henry certainly scores points for daring to so boldly and divisively subvert convention. McNaughton's richly rendered title character desires zero sympathy, making this more than clear as bodies pile up in the wake of increasingly distressing incidents. Disturbingly fascinating in its devotion to this character's agenda, oppressively era-specific production quirks manage to detract from the grim gravitas accompanying Henry's insatiable desire to kill via every known method. This thankfully becomes an afterthought as McNaughton's character study more loudly flaunts its latter half as a viscerally-inclined crescendo of Henry's true nature.