Second American call girl possibly pursued by twisted barrister the old rogue (6)

I haven't cracked this one yet — but the brilliant team at Fifteensquared have:

MO (second, as in just a mo) + HO (US slang for whore, so American call girl possibly) + reversal (twisted) of KC (king’s counsel, a barrister). A jorum for me, I was fascinated to discover the history of Mohock gangs , which sound a little like an 18th-century version of the Bullingdon Club