"Once you have eliminated the impossible, whatever remains, however improbable, must be true." If it was not Sir Choromatsu or Sir Heart, then there must have been a third person present.
Not technically difficult, no, if that's what you're asking... all PAL would have to do is program someone's PIP to open more than one door. Or let PAL open it himself. He has access to all the locks, even in the guesthouse.
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[He rubs his chin.]
So, either Choromatsu let someone in... or someone had a way to get in.
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[So basically yes.]
There are already two people with access to each room. Would it be difficult for there to be more?
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