 Determined to help Elizabeth in any possible way, Darcy returns to London and, unknown to either the Bennets or the Gardiners, uses Dyfed Brougham's contacts in the London demimonde to quickly find Wickham and Lydia.After failing to persuade Lydia to leave Wickham, Darcy proceeds to blackmail and bribe Wickham into marrying her, assuring Wickham's future good conduct by buying his many debts.This carries the implicit threat that Darcy will have Wickham sent to debtors' prison if he misbehaves.