July 3, 2026 is the date. The trailer is the preview. Your reaction is the content.
Free · no editing · camera or voice only · the clip is yours to post
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A woman puts her life on the line to protect her troubled, enigmatic cousin, Winthrop, who has been targeted and hunted by a powerful supernatural force.
Opening against Minions & Monsters, this one will be fighting for the same weekend conversation.
It hits the big screen on July 3, 2026.
The cast is fronted by Carla Gugino, Lou Taylor Pucci and Katharine Isabelle. Carla Gugino plays Ellen Hershbergen.
Capstone Studios, Brightlight Pictures and MGM+ Studios are producing. Daniel Stamm is in the director’s chair, with writing credits for Justin Yoffe. It clocks in at 1 hour 45 minutes.
Horror trailers are built for reaction cameras. The dread, the fake-out, the sting: your face does half the storytelling.
A theatrical trailer is built to travel before the movie does. Your reaction is part of how it travels.
Reaction clips for Lockbox will appear here as Reactors share them. The Reactr recorder is free for creators: watch the trailer, record on camera or voice only, and the finished clip is yours to post on your own TikTok, Reels, or Shorts channel.
Record the first reaction →Open the reaction recorder on your phone at reactr.gg/studio/lockbox, choose camera or voice only, and press record while the trailer plays. Reactr captures your reaction and gives you a share-ready clip when the trailer ends. It is free.
No. Voice Reaction mode records your commentary with the microphone only: the camera stays off, no face is recorded, and you still get a share-ready clip for your channel.
Lockbox is scheduled to open in US theaters on July 3, 2026. Dates can shift, so check back for updates.
Carla Gugino, Lou Taylor Pucci, Katharine Isabelle, Roman Kinsella and Donald Sales lead the cast, directed by Daniel Stamm.
Yes. Recording reaction clips on Reactr is free, with no paywall on the finished clip. You own your clip and can post it to TikTok, Reels, Shorts, or anywhere else. Reactr makes money from studios and sponsors, not from creators.
Watch the Lockbox trailer, hit record on camera or voice only, and the clip is yours to post.
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