midnight on Sunday
`` Thanks ! '' he replied , and paused to recover his self-possession . `` But let 's get right down to business now . If you 'll appear in this play I 'll not merely give you two hundred pounds a week , but I 'll explain to you how to get arrested and still arrive in triumph in London before midnight on Sunday . '' She recoiled a step and raised her eyes . `` How ? '' she demanded , as with a pistol .