Gramercy Pictures has released an intense redband trailer for “Sinister 2.”

“Be careful — children at play” the trailer warns as twin boys are haunted by the evil spirit of Bughuul in a rural house. “Wayward Pines” star Shannyn Sossamon portrays their protective mother.

Ciarán Foy (“Citadel”) directs from a script by Scott Derrickson and C. Robert Cargill. Jason Blum is producing via his Blumhouse Productions banner, along with Derrickson.

Lionsgate’s “Sinister,” starring Ethan Hawke, was released in 2012. The tale of a crime writer moving into a murdered family’s home grossed more than $80 million worldwide on a $3 million budget.

Comic-Con attendees can participate in “sinister sightings” — a scavenger hunt-style sweepstakes — in San Diego’s Gaslamp Quarter on Friday and Saturday night.

“Sinister 2” hits theaters on August 21.

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