The last page of the manuscript received by Poe appears to have been a photocopy. Rampo seems to know why, but there are still more mysteries surrounding the death of the author.
became obsessed with the case 
and worked to solve it.
.أصبحوا مهووسين بالقضيّة وعملوا لحلّها
waren davon begeistert
und haben sich in Deduktion geübt.
si è ossessionato col caso
e si è impegnato per risolverlo.
ficou obcecado com o caso
e trabalhou para resolvê-lo.