Hero Fiennes Tiffin Admits Initial Nerves Over On-Screen Pairing With Uncle Joseph Fiennes

Actor Hero Fiennes Tiffin opens up about the "nerve-wracking" experience of starring alongside his famous uncle, Joseph Fiennes, in the new Prime Video series.

By: AXL Media

Published: Mar 4, 2026, 4:34 AM EST

Source: People

A High-Stakes Family Reunion at Oxford

In a recent exclusive interview, Hero Fiennes Tiffin detailed the moment he discovered Joseph Fiennes had been cast as Silas Holmes. The series, which reimagines the legendary detective’s origins during his time at Oxford University, centers heavily on Sherlock's strained relationship with his adventurous father. Hero shared that while he was excited for the opportunity, he felt an immediate need to "step up his game" to match the intensity and experience his uncle brings to every set, particularly given Joseph’s storied career in projects like Shakespeare in Love and The Handmaid’s Tale.

Breaking the Ice on the Victorian Set

Despite the initial jitters, the duo quickly found their rhythm during filming in the United Kingdom. Hero noted that the shared "family shorthand" actually became an asset during long days of production. Joseph Fiennes, playing Silas, serves as a catalyst for the young detective’s development, pushing him toward the life of deduction and truth-seeking that defines the character. The actors found that their natural chemistry allowed them to explore the nuanced, often volatile relationship between father and son with a level of comfort that rarely exists between strangers.

The Fiennes Legacy and Modern Expectations

Working within a famous acting dynasty—which also includes uncle Ralph Fiennes—comes with its own set of public expectations. Hero expressed that he has always been conscious of his family's reputation but has strived to carve out his own identity, notably through the After film franchise. He emphasized that this project felt different because it wasn't just about the family name, but about the craft itself. Joseph reportedly provided a supportive environment on set, acting as a mentor without being overbearing, which helped Hero navigate the complexities of a Guy Ritchie-led production.