Hero Fiennes Tiffin shows off his smile while stepping out for Prime Video’s FYC Event on Sunday (April 16) at Linwood Dunn Theater in Los Angeles.

The 28-year-old Young Sherlock star was joined by his co-stars Donal Finn and Zine Tseng for the event, where they promoted their hit TV series.

Just a couple days before, Hero attended a special screening and conversation for the show, which debuted in early March, topping charts in 95 countries and gaining over 45 million viewers, making it one of the streamer’s Top 10 Originals of all time.

Young Sherlock has already been renewed for a second season on Prime Video, following it’s massive success on the streamer!

n irreverent, action-packed mystery that charts the legendary origin story of the world’s greatest detective. When a charismatic, youthfully defiant Sherlock Holmes meets none other than James Moriarty he finds himself dragged into a murder investigation that threatens his liberty. Sherlock’s first ever case unravels a globe-trotting conspiracy, leading to an explosive showdown that alters the course of his life forever. Unfolding in a vibrant Victorian England and adventuring abroad, the series will expose the early antics of the anarchic adolescent who is yet to evolve into Baker Street’s most renowned resident.

It also stars Hero‘s real-life uncle Joseph Fiennes, as well as Natascha McElhone, Max Irons and Colin Firth.

Browse through the gallery to see more photos of the Young Sherlock stars at the FYC event…