It really depends on what went wrong with the contract - was the information provided false? was the property in a different state to what it was described as in the contract? was the landlord falsifying documents or providing false identity? I currently study contract law at the University of York but unless you address what I have stated above there really is no straight forward legal advice to provide for you.
Property law or the law torts will allow you to sue based on the fulfillment of a pledge recognized on your part but was unaccomplished on his.
In other words you would have the legal power to seek reimbursement due to falsified information/contract/identity or a number of the above and this would allow you to seek compensation on the grounds of dishonoring a contract and betraying your trust and honest intentions.
if you provide the issue with the above contract I can in turn provide you with the required legal advice.
Kind Regards
Benvolio James Harvey