What Old film is this?

[RoRo_Inty]

Can anyone tell me the name of a film where a couple go to an isolated town and one of them goes missing while the other is in the toilet? I think they try to convince the other person the partner never existed...

[Lie-in King]

Not terribly old, but this jumped straight into my head -

http://en.wikipedia.org/wiki/Breakdown_(film) (?)

[bunkmoreland]

i thought of breakdown too. Hard to hear it's classed as old!

[notasyoungasiwas]

The Vanishing - 1993 ?