That's an emergency, one of the few times when you should say enough for them to be able to execute an immediate action; specially if you care about such action being performed. Further unrelated questioning should be avoided under the pretense that you need to talk with a lawyer.
Good. Glad to see there is some common sense here. The last couple of times this came up, some said even in an emergency you should stay silent, because for example if you tell the police the kidnappers drove north in a white Honda, and it later turns out you were mistaken (it was a cream Toyota and they drove northwest), you might be suspected of being an accomplice purposefully misdirecting the police!