Left on his own

Right when I went into the office he told me before we ended the day he would look for any more clues on this, and he wouldn't be in the office that day. Wait, why am I wasting my time with this? I got to remember where the cat is not why Carmine wasn't there on the second day. Wait a second should I try and call him or stay looking for the answer. For all that I know he could still be looking or has something else going on.