Big dilemma!

[babyduke]

While I was cleaning the garage couple days ago, I noticed the uneven surface on the bottom part of the rear passenger side door. First I suspected a beginning of rust but the more I look at it, it looks like a masking job after a dent. I can see a sloppy filler job followed by a paint job. As shown in the picture, you can even see a damage to the side molding. I'm not sure when this happened but it has to be pretty recent since I would've noticed it otherwise.

So here's the dilemma. I've been taking my cars to the same mechanic for over 4 years now. He's been the most honest guy who really takes care of my cars whose rate is very reasonable to a point I often feel guilty that I've paid too little. Many of his customers have been coming to him for over 25 years and vouch for his integrity. I feel blessed to have found this guy as my mechanic and have referred many people to him too. But I can't think of any other place where this coverup job could've happened as it's the only place I left it over night or a few days at. FYI, this shop also shares the facility with a body shop.

I really don't know what do to. Do I bring the car back to his shop to question or just bite the bullet? If I questions him, things will become very awkward. It's not a big place so if his employee did it, he would've probably known about it. Legally speaking, it's a lost cause since I've already left the shop and it's been a while since. I really have nothing to gain unless he somehow confesses and be responsible for the repair which is very unlikely.

Only other places I've left the car at someone else's hands are the car wash at the dealer and at some restaurant valet parking which wasn't for more than a few hours. I assume the drying time for filler alone will require more time.

Hmm...what to do? Sorry about this lengthy post.