Read it through once

Gregson and Lestrade seemed to be far from satisfied by this assurance, or by the depreciating allusion to the detective police. The former had flushed up to the roots of his flaxen hair, while the other’s beady eyes glistened with curiosity and resentment. Neither of them had time to speak, however, before there was a tap at the door, and the spokesman of the street Arabs, young Wiggins, introduced his insignificant and unsavoury person.