S1, E3: The Unit are beginning to make inroads into the criminal organisation. Ash's job isn't great for family life, but he's doing the kind of work he's dreamed of. Phone taps have just revealed that a big sum of money is being sent out from Xav's dry-cleaners on behalf of 'someone bigger', and it's a great lead - if they follow the money, it could lead them back to its source, and one step closer to identifying their 'Mr Big'.