<p>The apparent suicide in 1916 of the writer Mário de Sá-Carneiro causes his friend, the poet Fernando Pessoa, great distress. Pessoa feels compelled to trace Sá-Carneiro's final movements, to understand what could have caused him to lose all hope.<br>Exploring byways of the imagination and ambiguity with the investigator David Mondine and Dr. Abílio Fernandes Quaresma, solver of enigmas, the three men decide to uncover the conclusive certa...