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How do you know what is available in United States?

Results use your region cookie (or IP country). Availability is per country — a title on in the US may be missing in India.

How do I change my country?

Use the country control in the header. We save it in a wt_region cookie on this device. That cookie wins over IP detection.

Where does the Watch button go?

It redirects through /go to the official app or website for that provider in your country. We never send you to unofficial stream sites.

Available in United States

The Serial Killer's Apprentice (2025)

Name: Premier
Released: 2025-08-17

Where can I watch?

As of 2026-09-12, The Serial Killer's Apprentice (2025) streams on 4 of 6 tracked regions. India: Discovery+, Discovery+ Amazon Channel. United States: Investigation Discovery. United Kingdom: Discovery+ Amazon Channel, HBO Max Amazon Channel. Germany: Discovery+ Amazon Channel, HBO Max Amazon Channel.

TV-14 · 2025 · Returning Series · 1 season · 1 episodes

TMDB 0.0

Documentary

The documentary explores the story of Elmer Wayne Henley Jr., an accomplice to the infamous Houston serial killer, Dean Corll, also known as "The Candyman Killer." The program features an in-depth, never-before-seen interview with Henley, who speaks for the first time in over 50 years about his involvement in the murders. It examines the psychological dynamic between a predator and a vulnerable teenager and how Henley was groomed to become an accomplice in one of the worst serial murder cases in U.S. history.

The Serial Killer's Apprentice (2025)

Where can I watch?

TV-14 · 2025 · Returning Series · 1 season · 1 episodes

TMDB 0.0

Availability by country

Streaming in 4 of 6 tracked countries as of 2026-09-12.

Country	Licensed apps
India	Discovery+, Discovery+ Amazon Channel
United States	Apple TV Store, Fandango At Home, Investigation Discovery
United Kingdom	HBO Max Amazon Channel, Discovery+ Amazon Channel
Japan	Not listed
Germany	HBO Max Amazon Channel, Discovery+ Amazon Channel
Brazil	Not listed

Country

Licensed apps

India

Discovery+, Discovery+ Amazon Channel

United States

Apple TV Store, Fandango At Home, Investigation Discovery

United Kingdom

HBO Max Amazon Channel, Discovery+ Amazon Channel

Japan

Not listed

Germany

HBO Max Amazon Channel, Discovery+ Amazon Channel

Brazil

Not listed

FAQ

Where can I watch The Serial Killer's Apprentice in United States?

As of 2026-09-12, in United States: The Serial Killer's Apprentice streams on Investigation Discovery; rent or buy on Apple TV Store, Fandango At Home.

Where can I watch The Serial Killer's Apprentice in India?

Licensed apps in India: Discovery+, Discovery+ Amazon Channel.

Where can I watch The Serial Killer's Apprentice in United Kingdom?

Licensed apps in United Kingdom: HBO Max Amazon Channel, Discovery+ Amazon Channel.

Where can I watch The Serial Killer's Apprentice in Japan?

The Serial Killer's Apprentice is not on tracked licensed apps in Japan right now.

Where can I watch The Serial Killer's Apprentice in Germany?

Licensed apps in Germany: HBO Max Amazon Channel, Discovery+ Amazon Channel.

Where can I watch The Serial Killer's Apprentice in Brazil?

The Serial Killer's Apprentice is not on tracked licensed apps in Brazil right now.

Do you host The Serial Killer's Apprentice?

No. WhereToWatch.it never hosts or embeds the title. We only show licensed apps and open their official sites.

Can I watch The Serial Killer's Apprentice on this site?

No. The player is an official trailer only. Watch opens the licensed app or store that actually has the title in your country.

What do Stream, Free, Ads, and Rent mean?

Stream is included with a subscription. Free is complimentary on that app. Ads means ad-supported streaming. Rent or Buy is a one-off purchase on a store.

Available in United States

The Serial Killer's Apprentice (2025)

Where can I watch?

TV-14 · 2025 · Returning Series · 1 season · 1 episodes

TMDB 0.0

Documentary

Availability by country

Streaming in 4 of 6 tracked countries as of 2026-09-12.

Country	Licensed apps
India	Discovery+, Discovery+ Amazon Channel
United States	Apple TV Store, Fandango At Home, Investigation Discovery
United Kingdom	HBO Max Amazon Channel, Discovery+ Amazon Channel
Japan	Not listed
Germany	HBO Max Amazon Channel, Discovery+ Amazon Channel
Brazil	Not listed

Country

Licensed apps

India

Discovery+, Discovery+ Amazon Channel

United States

Apple TV Store, Fandango At Home, Investigation Discovery

United Kingdom

HBO Max Amazon Channel, Discovery+ Amazon Channel

Japan

Not listed

Germany

HBO Max Amazon Channel, Discovery+ Amazon Channel

Brazil

Not listed

FAQ

Where can I watch The Serial Killer's Apprentice in United States?

As of 2026-09-12, in United States: The Serial Killer's Apprentice streams on Investigation Discovery; rent or buy on Apple TV Store, Fandango At Home.

Where can I watch The Serial Killer's Apprentice in India?

Licensed apps in India: Discovery+, Discovery+ Amazon Channel.

Where can I watch The Serial Killer's Apprentice in United Kingdom?

Licensed apps in United Kingdom: HBO Max Amazon Channel, Discovery+ Amazon Channel.

Where can I watch The Serial Killer's Apprentice in Japan?

The Serial Killer's Apprentice is not on tracked licensed apps in Japan right now.

Where can I watch The Serial Killer's Apprentice in Germany?

Licensed apps in Germany: HBO Max Amazon Channel, Discovery+ Amazon Channel.

Where can I watch The Serial Killer's Apprentice in Brazil?

The Serial Killer's Apprentice is not on tracked licensed apps in Brazil right now.

Do you host The Serial Killer's Apprentice?

No. WhereToWatch.it never hosts or embeds the title. We only show licensed apps and open their official sites.

Can I watch The Serial Killer's Apprentice on this site?

No. The player is an official trailer only. Watch opens the licensed app or store that actually has the title in your country.

What do Stream, Free, Ads, and Rent mean?

Stream is included with a subscription. Free is complimentary on that app. Ads means ad-supported streaming. Rent or Buy is a one-off purchase on a store.