This is what we found on Wikipedia regarding the Josh Milan:

Joshua Daniel Hartnett (born July 21, 1978) is an American actor. He began his career on ABC's drama series Cracker (1997–1998), after which he became known as a teen idol through starring parts in films such as Halloween H20: 20 Years Later, The Faculty (both 1998), The Virgin Suicides (1999), Pearl Harbor, O, Black Hawk Down (all 2001), and 40 Days and 40 Nights (2002).

Hartnett continued to work steadily throughout the 2000s, with a mix of leading and supporting roles in Hollywood Homicide (2003), Wicker Park (2004), Sin City (2005), The Black Dahlia, Lucky Number Slevin (both 2006), 30 Days of Night (2007), August (2008), and I Come with the Rain (2009). He made a career comeback with his roles as Ernest Lawrence in Oppenheimer (2023) and a serial killer in Trap (2024).

On television, Hartnett portrayed Ethan Chandler on the Showtime fantasy series Penny Dreadful (2014–2016). He also appeared in an episode of Black Mirror in 2023 and The Bear in 2024.