“The Talamasca” is the third series in AMC’s so-called Anne Rice Immortal Universe, along with “Interview with the Vampire” and “Mayfair Witches.” McGovern joins previously announced cast members Nicholas Denton and William Fichtner.

Downton Abbey star Elizabeth McGovern has joined the cast of Anne Rice’s The Talamasca (working title), the third series in AMC ‘s Immortal Universe. McGovern will be a series regular alongside previously announced stars Nicholas Denton and William Fichtner.

Downton Abbey star Elizabeth McGovern has nabbed a lead role alongside Nicholas Denton in Anne Rice's The Talamasca drama for AMC Networks. McGovern will play Helen in the third series of AMC's Anne Rice Immortal Universe to bow on AMC and AMC+ in 2025.