Doctor Who' trailer: Neil Patrick Harris is David Tennant's enemy

With the release of the new 'Doctor Who' trailer — starring Neil Patrick Harris as David Tennant's enemy — showrunner Russell T Davies promises plenty of upcoming surprises.

Doctor Who's new teaser trailer features David Tennant's return, villainous Neil Patrick Harris and a clueless Ncuti Gatwa; watch video - Bollywood Hungama

Doctor Who trailer finally confirms which classic villain David Tennant's Doctor will face

He'd Never Heard Of It In His Life': Doctor Who's Russell T. Davies Recounts Casting Neil Patrick Harris For The 60th Anniversary

Neil Patrick Harris joins cast of Doctor Who as the Doctor's “greatest enemy”

Doctor Who SPOILER: Neil Patrick Harris is pictured on set for the first time

THE MATRIX RESURRECTIONS Star Neil Patrick Harris Joins DOCTOR WHO As A Terrifying Villain

Doctor Who' trailer: Neil Patrick Harris is David Tennant's enemy

Doctor Who teases Ncuti Gatwa's debut in trailer for The Giggle

Doctor Who filming: Neil Patrick Harris, David Tennant and Catherine Tate in Bristol

Neil Patrick Harris joins cast of Doctor Who as the Doctor's “greatest enemy”