undertone
2026 · Horror
Now streaming · 5 credits
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1 credit = $1 · films $5 · episodes $1
“Trust his instincts.”
About Good Boy
A loyal dog moves to a rural family home with his owner Todd, only to discover supernatural forces lurking in the shadows. As dark entities threaten his human companion, the brave pup must fight to protect the one he loves most.
Good Boy (2025) is a horror film running 1h 13m, directed by Ben Leonberg. It is available in HD on Cineby for 5 credits. Create an account, add credits and the unlock is yours permanently. Use the player controls for subtitles, quality and fullscreen.
Watch Good Boy online
Once unlocked, the film starts in the player at the top of this page. If the first source is slow, the player rotates to a backup automatically. Your purchase is stored in your account, so Good Boy opens straight into playback on any return visit. Progress is saved on this device.
Good Boy FAQ
How much does it cost to watch Good Boy?
Good Boy costs 5 credits on Cineby. Credits are $1 each, and an unlock is permanent — once bought, the film stays in your account and can be rewatched without paying again.
Do I need an account to watch Good Boy?
Yes. Create an account, add credits, then unlock the film. Signing up is free and only takes an email and password.
Can I watch Good Boy again after unlocking it?
Yes. The purchase is attached to your account, so returning to this page later opens the player directly. You are only charged once.
Who directed Good Boy?
Good Boy was directed by Ben Leonberg.
Can I watch Good Boy on my phone?
Yes. Cineby is responsive and the player works in mobile browsers. Tap fullscreen on the player for a larger picture, and use the CC control for subtitles.
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