Henry spun around to face the intruder.
"Can I help you" he asked trying to keep a level of control in his voice.
"Umm" said the man, looking vague, "Is this your house?"
"Yes it is" came Henry's voice, beginning to quaver.
"Oh" said the man. "My name is Thomas"
"Hello Thomas" replied Henry and repeated his first question "Can I help You?"
"No" said Thomas, vacantly, his attention beginning to settle on the bath mat.
Being a polite man, Henry never could ask Thomas to leave, and so, if you visit flat C in Church Street, London, you will find Thomas, in the bathroom of Mr. Henry T Wardspoon, busing himself with the shampoo or something.