Harley Quinn (2000-) #5

Bo and Surley, the bounty hunters who've been on Harley's trail since issue #3, are joined by a new partner--a former FBI profiler who's about to uncover something verrrrry interesting about Harley's past. Meanwhile, Harley and the Quinntettes get a new member, and embark on a theft of, shall we say, gargantuan proportions.