I. The “Canary” II. Footprints in the Snow III. The Murder IV. The Print of a Hand V. The Bolted Door VI. A Call for Help VII. A Nameless Visitor VIII. The Invisible Murderer IX. The Pack in Full Cry X. A Forced Interview XI. Seeking Information XII. Circumstantial Evidence XIII. An Erstwhile Gallant XIV. Vance Outlines a Theory XV. Four Possibilities XVI. Significant Disclosures XVII. Checking an Alibi XVIII. The Trap XIX. The Doctor Explains XX. A Midnight Witness XXI. A Contradiction in Dates XXII. A Telephone Call XXIII. The Ten O’Clock Appointment XXIV. An Arrest XXV. Vance Demonstrates XXVI. Reconstructing the …
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