Details of the Buffy and Angel episodes airing this week.

In Why We Fight, tonight's Sky One episode of Angel, a mystery figure from Angel's past arrives at Wolfram and Hart and takes the gang hostage. But why?

I flashbacks to the Second World War, we discover that Angel worked with the US Navy to recover a captured German sub with a dark secret. Tune in at 9pm or catch the repeat at midnight on Saturday to find out more.

Channel Five take us back to season three's Forgiving at 11.55pm tonight. As Fred and Gunn search for Wesley, Angel tracks down interdimensional demon Sahjhan, casting a spell which could make it possible to kill him.

Finally, you can catch the uncut version of Buffy's The Killer in Me on BBC2 in the wee small hours of Saturday morning (1.50am, to be precise). When the spirit of Warren threatens to take over Willow, she turns to an old friend for help.