barking up the wrong tree

If you think I'm the one who broke the vase, you're barking up the wrong tree

He's trying to get a promotion by badmouthing his colleagues, but he's barking up the wrong tree

She believes her lost keys are in the car, but I suspect she's barking up the wrong tree

The detective is questioning the wrong suspect; he's barking up the wrong tree

You're barking up the wrong tree if you expect me to lend you money again

Trying to convince the boss to give you a raise during budget cuts is barking up the wrong tree

The company thinks they can solve the problem by just increasing marketing, but they're barking up the wrong tree

He kept asking for advice from his uncle, but his uncle knew nothing about the subject, so he was barking up the wrong tree

If you're looking for the original manuscript, you're barking up the wrong tree; it was lost years ago

The journalist is investigating the wrong company for the scandal; he's barking up the wrong tree