1 of 3 | Cameron Monaghan is set to play young Harry Bosch in the upcoming series, “Bosch: Start of Watch.” Photo courtesy of MGM+

Oct. 15 (UPI) — Shameless and Gotham alum Cameron Monaghan has signed on to play Los Angeles rookie cop Harry Bosch in a new MGM+ spinoff, Bosch: Start of Watch, set in the early 1990s.

The character was previously played by Titus Welliver in Bosch, its sequel, Bosch: Legacy and the spinoff Ballard.

Omari Hardwick from Star Trek: Section 31 and Army of the Dead will play veteran officer Eli Bridges in Start of Watch.

Production is slated to begin in 2026.

“We are thrilled to expand the Bosch universe with this compelling origin story that showcases how one of television’s most beloved detectives became the man we know today,” Michael Wright, head of MGM+, said in a statement Wednesday.

“With Cameron Monaghan and Omari Hardwick bringing these complex characters to life, and the creative vision of Michael Connelly and our talented executive producers, Bosch: Start of Watch promises to deliver the gritty, authentic storytelling that honors the franchise’s legacy while opening an exciting new chapter.”