My dad watches CSI (Miami I think, the one with the posey bloke with the shades has a historical name oh dear I'm vague

) Anyway the other week he was watching it off the recorder and right at the end they told him the second part would be in 'Without A Trace' on a completely different channel. This was no good as it had been recorded so the other one had long gone.
Did anyone see the CSI/Without a Trace crossover? Can you tell my poor dad what happend
