"Precisely," interrupted the superintendent.

"Any result from the offer of a reward for Goldenburg?"

A flicker of amusement dwelt in Heldon Foyle's blue eyes. "Yes. He has been seen by different people within an hour or two of each other in Glasgow, Southampton, Gloucester, Cherbourg, Plymouth, and Cardiff. Our information on that point is not precisely helpful. Of course, we've got the local police making inquiries in each case, but I don't anticipate they will find out much. Still, it will keep 'em amused."

The necessity of a conference broke up further conversation. Gathered in the building were some thirty or forty departmental chiefs of the C.I.D., the picked men of their profession. Most of them were divisional detective inspectors who were in charge of districts, and some few were men who had special duties. They were ranged about tables in a lofty room, its green distempered walls hung with stiff photographs of living and retired officials. Men of all types were there, from the spruce, smartly groomed detectives of the West End to the burly, ill-dressed detectives of the East. Between them they spoke every known language. Here was Penny, who had specialised in forgeries; Brown, who knew every trick of coiners; Malby, the terror of race-course sharps; Menzies, who had as keen a scent for the gambling hell as a hound for a fox; Poole, who was intimate with the ways of railway thieves and shoplifters. Not one but thoroughly understood his profession, and knew where to look for his information.

Foyle took the chair, and the buzz of conversation became general. It was a business conference of experts. Views were exchanged on concrete problems; the movements of well-known criminals discussed. "Velvet-fingered Ned" had disappeared from Islington and reappeared in Brixton. "Tony" Smith was due out of prison. Mike O'Brien had patched up the peace with "Yid" Foster, and when they got together——

So the talk went on, and so every district learned what was taking place in other districts. The superintendent sat silent for a while, listening. At last his smooth voice broke in.

"The man Ivan, whose description was circulated, is not to be touched now. Tell your men to let him alone if they come across him."

There was a deep chorus, "Very good, sir," and Foyle, with a nod of dismissal, left the room. He stopped to make an inquiry in the clerk's office, and passing along the corridor unlocked a door and pressed a bell.

In under half an hour a big labourer, with corduroys tied about the knees, lurched unsteadily out of the Lost Property Office and passed into Whitehall. Rough, tousled hair, an unkempt moustache, and a day's growth of beard on the chin were details warranted to stand inspection. Heldon Foyle rarely used a disguise, but when he did he was careful that nothing should get out of order. Hair and moustache were his own, dyed and brushed cunningly. Yet, when he reeled against Green near the Albany, the inspector, who was an observant man, pushed him roughly aside with an anathema on his clumsiness.