When the casting breakdown for Derek Turnbow circulated across agencies, the character description called for a sharp-tongued, self-assured kid capable of puncturing high-stakes supernatural tension with authentic teenage skepticism. Matt and Ross Duffer had auditioned hundreds of child actors who fell into familiar pitfalls: they played the lines either too precocious or overly rehearsed.
Connelly took an unconventional approach in his Chicago living room. Instead of reciting the provided sides with standard dramatic timing, he injected frantic, kinetic physical comedy inspired by John Hughes classics. His tape drew directly from Macaulay Culkin’s high-anxiety, hyper-resourceful performance in 1990’s Home Alone.
Connelly paced around the frame, treated the camera like an annoying older sibling, and delivered his lines while improvising small pieces of domestic business. He fussed with household props and snapped back at invisible authority figures. The tape cut through the monotony of thousands of digital submissions. The Duffer Brothers recognized that Connelly possessed an instinctive grasp of vintage 1980s cinematic rhythm. He was flown to Atlanta for an in-person chemistry read, locking down the role within days.
