Investigation Discovery will premiere its documentary, "Who Is Luigi Mangione?" on Monday, Feb. 17, 2025. In this file photo, Mangione, charged in the fatal shooting of UnitedHealthcare CEO Brian Thompson, is escorted by police, Thursday, Dec. 19, 2024, in New York. AP

“Who is Luigi Mangione?” will premiere on Monday, February 17 at 8 p.m. ET on ID and will be available for streaming on Philo (free trial), Sling (half off first month), DirecTV Stream (free trial), and Max.

Writings and social media posts help reveal the secret life and troubles of Luigi Mangione, the man accused of killing United Healthcare CEO Brian Thompson in Midtown Manhattan on Dec. 4, 2024, Investigation Discovery says.

Watch the show live streaming online: Who is Luigi Mangione? for FREE with Philo (free trial). If you prefer a different streaming platform, you can also watch it on Fubo (free trial). If you prefer a different streaming platform with DirecTV Stream (free trial). You can also watch it on Max (promotional offers).

A new documentary set to air on Investigation Discovery (ID) later this month dives into the chilling case of Luigi Mangione, the 26-year-old accused of assassinating Brian Thompson, the CEO of UnitedHealthcare.

Investigation Discovery's 'Who is Luigi Mangione' premieres tonight — here's where to stream it online for free

Philo is one of the cheapest streaming services on the market. At just $28 a month after its 7-day free trial, users can access over 70 popular television channels such as Investigation Discovery, HGTV, TLC, MTV and more. The entertainment focused streaming service also includes unlimited DVR.

Investigation Discovery's tell-all documentary special used Luigi Mangione‘s own words to offer his unfiltered take on his legal drama. Mangione, 26, was named as the prime suspect in UnitedHealthcare CEO Brian Thompson‘s death in December 2024.