‘Say Nothing’ Asks: What Would You Do?

The FX series strives to capture the complexity of its subject: the long sectarian conflict in Northern Ireland known as the Troubles.

The actor Anthony Boyle (“Manhunt,” “Masters of the Air”) grew up in West Belfast. On the way to school he would walk past murals of hunger strikers, of murdered children. He was a child, he said, during “the hangover” of the Troubles, the sectarian conflict between Protestant unionists, who were British loyalists, and Catholic nationalists in Northern Ireland that lasted into the late 1990s.

“The history is so recent,” he said. “You feel the pressure of it always.”

So when the director Mike Lennox (“Derry Girls”) reached out to him about starring in the FX limited series “Say Nothing,” Boyle was hesitant. The nine-episode series is adapted from Patrick Radden Keefe’s nonfiction book “Say Nothing: A True Story of Murder and Memory in Northern Ireland,” which is set primarily in Belfast during and after the Troubles. Radden Keefe is American, as is Joshua Zetumer, the showrunner. FX, which produced the series, is a division of Disney Entertainment.

All of this gave Boyle pause. In a recent interview, he described his thinking at the time: “When brothers have killed each other over which splinter group of the paramilitary they belong to, a show on Disney isn’t going to get this right.”

But reading the scripts convinced Boyle to play Brendan Hughes, a member of the Provisional Irish Republican Army. In “Say Nothing,” which premieres Thursday on Hulu, he stars alongside Lola Petticrew, as Dolours Price; Hazel Doupe, as Marian Price; and Josh Finan, as Gerry Adams.

The actors play young versions of these real-life figures, who engage in or sanction acts of violence in pursuit of a political goal. (Adams has consistently denied his involvement with the I.R.A., though Hughes, who died in 2008, and Dolours Price, who died in 2013, both disputed this.) The series captures both the youthful excitement that fighting for a cause can kindle and the devastating reverberations that come after.