No Night Is Too Long is a 2002 BBC dramatisation based on the 1994 novel of the same name by Barbara Vine (a pseudonym of Ruth Rendell), with a screenplay by Kevin Elyot.
The plot follows a young man from Suffolk named Tim Cornish (Lee Williams), studying English at Warwick University; a bright student in his final year who leads a promiscuous lifestyle.
One day he spots Dr. Ivo Steadman (Marc Warren), a paleontology lecturer, and engineers meetings with him in a lift and an office.
Once they arrive in Juneau, Alaska, Ivo explains that he has to replace a colleague on the next cruise trip, leaving a dismayed Tim in their hotel for ten days.
During his absence Ivo writes a love letter each day, but Tim meets and becomes infatuated with a woman named Isabel (Mikela J. Mikael).
This enrages Ivo, and in the ensuing fight, Tim accidentally throws him against the rocky mountainside and thinks he is dead.
Once there he fails to track down Isabel, but has a brief sexual relationship with a homeless drifter, Thierry, and begins to have hallucinations of seeing Ivo.
Tim attends a performance of Der Rosenkavalier at the town music festival and at the end bumps into James, who had been one of his admirers at school, and is now a lawyer.
The film title comes from the closing pages of Act 2, in which Baron Ochs sings the phrase, "Ohne mich, ohne mich jeder Tag dir so bang ; Mit mir, mit mir keine Nacht dir so lang", which Tim, recalling his passionate times with Ivo, renders as "Without me, without me every day is a misery; With me, with me no night is too long."