
In March 2021, the Los Angeles Police Department stated that he was the subject of a sexual assault investigation. In 2021, claims of sexual abuse and cannibalistic fetishism were made against Hammer, including rape, physical and emotional abuse, and sexual violence masquerading as BDSM with a woman named Courtney Vucekovich also stating that he had asked her if she was willing to let him eat one of her ribs. On Broadway, he starred in a production of Straight White Men in 2018.


Ginsburg in the biopic On the Basis of Sex (2018). The following year, he portrayed Martin D. In 2017, he starred in Luca Guadagnino's romantic drama Call Me by Your Name, for which he received a nomination for the Golden Globe for Best Supporting Actor and a nomination for the Independent Spirit Award for Best Supporting Male. Edgar (2011), played the title character in the western The Lone Ranger (2013), and starred as Illya Kuryakin in the action film The Man from U.N.C.L.E. Hammer portrayed Clyde Tolson in the biopic J. His first leading role was as Billy Graham in the 2008 film Billy: The Early Years, and he gained wider recognition for his portrayal of the twins Cameron and Tyler Winklevoss in David Fincher's biographical drama film The Social Network (2010), for which he won the Toronto Film Critics Association Award for Best Supporting Actor.

Hammer began his acting career with guest appearances in several television series.
