Also help finding an old story

Looking for an old story. Guy modifies his chastity cage to make it harder to escape. Hides his chastity keys in a suitcase. Unbeknownst to him, his wife takes that suitcase on an 8 week work assignment. He is resigned to his fate. But at 4 weeks, wife surprises him for weekend visit, but didn't know about the chastity cage or about the hidden keys and she didn't bring back that suitcase. She gets to enjoy her trapped hubby all weekend with no way to escape. Anyone remember this one? I've tried searching, but haven't found it yet.