The idea of a clock that freezes time for everyone except the user is an old one and certainly did not originate on \\\"The CBS Radio Mystery Theater.\\\"  However, this specific instance of this idea is very similar to the much later episode of \\\"Friday the 13th:  The Series\\\" entitled \\\"13 O\\\'Clock:\\\"  both clocks need blood to run and time freezes for an hour.  The \\\"Friday the 13th.\\\" clock has the 13 in place of the 1 rather than the 12, however.  What was interesting with \\\"Time And Again\\\" is that the protagonist can\\\'t think of anything to do with that frozen hour than enjoy a bit of solitude.  Normally, you would use the time to commit incredible crimes while enjoying an airtight alibi.  Supernatural thriller.