Disturbing Jeff and Candy....

Someone is letting our dog, Dutch, out of the backyard. 2 weeks ago Thursday I got a call while at work from my neighbor down the street and around the corner, asking me if I had a dog named Dutch. He had gotten out somehow and I figured it was him digging out. Chris, my friendly neighbor, brought him home for me and checked things out. When I got home I searched the yard for the "escape hole". Never found it. Called Chris and he told me the front gate was open. That baffled me because I can't even get the gate open and there is no possible way that Dutch could do it. The lock is almost at the top of the fence and pushing and pulling will not open the gate. Anyways, 2 weeks later, this past Thurday, I get another call from a lady in the neighborhood asking if I have a dog named Dutch. I knew when she said that, he was loose. She kindly kept him at her house all day and I picked him up after work. I was anxious to get home and see how he had gotten out. Low and behold, the gate was open again. At this point I knew someone had to be letting him out. I knew I had to lock the fence. Jeff and I discussed this too and he agree to lock the gates. Well I have been off work from Friday thru today, so I didn't put the locks on yet since I would be home. I got up at 8:30 to feed him. I walk outside and look over to find the gate is wide open again!!!!! I jump in the truck, searching for Dutch and luckily I found him pretty quickly almost at the back entrance leading to the main road. The lock is on the gate now. I've been talking to Jeff online this morning and the only thing we can figure is someone around us knows that Jeff is gone and that his truck is normally always here, but they don't realize I've sold my car and that someone was home. We think that someone hears a dog barking all night and thinks it is Dutch. The neighbors never let their dog out of the fence so how would they know they have a dog and that HE'S the one barking all night? I think Dutch is being accused of something he hasn't done and someone wants him to go away and not come back. We are ready to use survelliance and get the cops involved once we know who it is. I am pissed about this entire situation.