This discussion may contain spoilers!
I "guessed" the whole thing
So 2 guys are coming down the road. And they don't exactly look threatening.. They just want some gas and they're offering food in exchange.
Considering the only thing the group was missing - or at least the #1 ergency- was food, sure let's make a deal. BUT
why should anyone from our group leave to go to the farm? You go back to your farm, bring some food and we give you the gas. We don't know these people, maybe there is no farm at all or they have no food. Right there it was a deal breaker and bad news for me. But all the rest of the group was like let's get going.
And then you go towards the farm and you see the bandits. For a minute there I thought I figured it all wrong and that the 2 guys were bandits as well.
But anyway we get at the farm. They don't let you see the barn before you check the fence (fine), but they also don't let you in the house;
Now why i said "guess" instead of guess. It's a scenario that I have seen before in media, for example the movie the road
Now that I laid these out I'm thinking that they could have avoid making you so suspicious. I mean why not let you in the house when you arrive? Mark is not hurt, no other victim is in there... why not..? It didn't had to be the whole house either, just 1 room. With these in place, the locked door is just the confirmation. You don't even have to open it, you're sure these people are bad news and you know exactly the kind..