How do I protect myself in a duel escrow?

[Ryan D.]

I'm under contract on a pair of 4-plex buildings in Florida with a wholesaler. The wholesaler has the buildings under contract with the current owner, and wants to close using a duel escrow. What do I need to do to project myself in such a closing? What are the risks to me (fraud, etc) that I should look out for? I'm extra concerned here b/c my deal is all cash for a good chunk of money - I don't want to sent out a big wire and then realize I've been defrauded.