The Sherlock Holmes of the world of science, Professor Seldom, and his friend, a young mathematician from Argentina, once again find themselves embroiled in a complex investigation. This time they will have to solve a series of crimes intricately connected with the life and works of Lewis Carroll - the author of the immortal duology about the adventures of Alice in Wonderland and Through the Looking Glass. A brutal attempt has been made on the life of a girl who discovered a certain manuscript in the Oxford archives that could become the sensation of the century for everyone , who studies the biography or work of Carroll. The publisher who was going to publish this document was poisoned. And each of the actions of the mysterious killer resembles another quote from the books about Alice...