Leave somebody holding the bag
Definition 1 of 1
Pro Tip 1/3Unfair Consequence
Used when someone unfairly ends up with the problem that someone else should handle. 
When the project failed, John disappeared, leaving me holding the bag with the angry clients.
Pro Tip 2/3Not Literal
It's figurative, meaning nobody is actually left holding a physical bag. 
The other volunteers quit, leaving me holding the bag with all the planning.
Pro Tip 3/3Emotional Impact
The phrase can express feelings of betrayal and frustration. 
After supporting her campaign, she left us holding the bag when she switched parties.