A Crook's Best Friend is a level 21 mission started automatically upon reaching level 18.
Meet Two-Face in Burnley Nightclub in Gotham.
- "Calculator here. Word on the street is that Wayne Enterprises has a big diamond shipment in a storage facility in Burnley. Maybe Bruce Wayne is finally planning to pop the question to one of his socialites. But don't worry about him. I'm sure he can buy more when you steal these. Two-Face in the Burnley safehouse has the way in." — Calculator
- Speak with Two-Face and get Wayne Enterprises Security Codes
Upon speaking to him, the mission turns into Ice Heist Baby.
- Cash: 18