Where can I watch Dept. Q for free?

Watch Dept. Q free in HD on Castle. Download the Castle App to stream all seasons and episodes with English, Hindi, Tamil, Telugu audio — no subscription, no signup needed.

How many seasons of Dept. Q are available on Castle?

Castle has all 1 seasons of Dept. Q, with a total of 9 episodes streaming free in HD.

What languages is Dept. Q available in?

On Castle, Dept. Q is available in English, Hindi, Tamil, Telugu, all in HD.

Who stars in Dept. Q?

Dept. Q stars Leah Byrne, Matthew Goode, Chloe Pirrie, Steven Miller.

When did Dept. Q first premiere?

Dept. Q premiered on 2025-05-29 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.

Dept. Q

2025•9 epsIMDB 8.7

Crafted by Scott Frank, Dept. Q Season 1 brings Leah Byrne back alongside Matthew Goode in a chapter that refuses to slow down. Set against United Kingdom, the season unravels A brash but brilliant cop becomes head of a new police department, where he leads an unlikely team of misfits in solving Edinburgh's cold cases. with thriller storytelling across 9 episodes, exploring themes of thriller in ways that elevate the series to new heights.