Where can I watch Attack of the Unknown for free?

Watch Attack of the Unknown free in HD on Castle. Download the Castle App to stream the full movie with English, Hindi, Tamil audio — no subscription, no signup needed.

What languages is Attack of the Unknown available in?

On Castle, Attack of the Unknown is available in English, Hindi, Tamil, all in HD.

Who stars in Attack of the Unknown?

Richard Grieco stars in Attack of the Unknown, alongside Jolene Andersen and Douglas Tait in lead roles.

When was Attack of the Unknown released?

Attack of the Unknown was released on 2020-08-28, and is now streaming free on Castle.

Is the Castle App safe to download?

Yes. The Castle APK is a verified safe file. It requires only basic Android permissions and does not need root access. Compatible with Android 6.0 and above.

Attack of the Unknown

2020•103 minIMDB 3.2

Directed by Brandon Slagle and brought to life by Richard Grieco, Attack of the Unknown (2020) unfolds in United States as Richard Grieco faces A SWAT team transporting a vicious crime syndicate boss must fight their way out of a county detention center during a catastrophic alien invasion.. Co-starring Jolene Andersen, this Action feature delves into action, delivering Action that keeps audiences engaged from opening scene to final frame.