Transcriber's Notes: 1. Page scan source: https://books.google.com/books?id=KF4gAAAAMAAJ (The New York Public Library) [Front cover] [Illustration: "TAKE ME AWAY; TAKE ME AWAY!" SHE CRIED PITEOUSLY. _Frontispiece_, p. 2] THE MYSTERY QUEEN BY FERGUS HUME _Author of "The Mystery of a Hanson Cab," "The Yellow Holly," "The Red Window," "The Solitary Farm," "The Opal Serpent," etc., etc., etc_. ILLUSTRATIONS BY HOWARD SOMERVILLE G. W. DILLINGHAM COMPANY PUBLISHERS NEW YORK COPYRIGHT, 1912, BY G. W. DILLINGHAM COMPANY _The Mystery Queen_ CONTENTS CHAPTER I. A STRANGE VISITOR II. A COMPLETE MYSTERY III. DUTY BEFORE PLEASURE IV. AN AMATEUR DETECTIVE V. MUDDY WATER VI. THE INVENTOR VII. THE HERMIT LADIES VIII. AVIATION IX. MAHOMET'S COFFIN X. ANOTHER MYSTERY XI. ON THE TRAIL XII. AN AMAZING ADVENTURE XIII. A BOLD DETERMINATION XIV. A BUSY AFTERNOON XV. ABSOLUTE PROOF XVI. DAN'S DIPLOMACY XVII. AT BAY XVIII. THE FLIGHT XIX. TREACHERY XX. QUEEN BEELZEBUB'S END XXI. SUNSHINE ILLUSTRATIONS "Take me away; take me away!" she cried piteously "Why, even your cards are scented." The Mystery Queen CHAPTER I A STRANGE VISITOR "A penny for your thoughts, dad," cried Lillian, suppressing a school-girl desire to throw one of the nuts on her plate at her father and rouse him from his brown study. Sir Charles Moon looked up with a start, and drew his bushy gray eye-brows together. "Some people would give more than that to know them, my dear." "What sort of people?" asked the young man who sat beside Lillian, industriously cracking nuts for her consumption. "Dangerous people," replied Sir Charles grimly, "very dangerous, Dan." Mrs. Bolstreath, fat, fair, and fifty, Lillian's paid companion and chaperon, leaned back complacently. She had enjoyed an excellent dinner: she was beautifully dressed: and shortly she would witness the newest musical comedy; three very good reasons for her amiable expression. "All people are dangerous to millionaires," she remarked, pointing the compliment at her employer, "since all people enjoy life with wealth, and wish to get the millionaire's money honestly or dishonestly." "The people you mention have failed to get mine, Mrs. Bolstreath," was the millionaire's dry response. "Of course I speak generally and not of any particular person, Sir Charles." "I am aware of it," he answered, nodding and showed a tendency to relapse into his meditation, but that his daughter raised her price for confession. "A sixpence for your thoughts, dad, a shilling--ten shillings--then one pound, you insatiable person." "My kingdom for an explicit statement," murmured Dan, laying aside the crackers. "Lillian, my child, you must not eat any more nuts or you will be having indigestion." "I believe dad has indigestion already."