Author: Marco Innocenti. A strange library. A funny detective couple.
 The Investigalibri Agency is back by popular demand!
 Tommy Tevis and his friend, the big fat Black Mouse,
 they made a fantastic detective duo. Their office?
 A library of thousands of volumes! The cases they solved?
 Any mystery hidden between the pages of books! Then one day
 Nero Mouse left the city library, moved to
 campaign with his new wife Rattìlia and the Investigalibri Agency
 it's closed forever.
 Well not quite forever. Away from his beloved books, Nero
 Mouse has become sick with homesickness, and there is only one medicine that
 can cure it: return to the library and reopen the Investigalibri Agency
 together with Tommy, just like old times.
 So, let's follow Nero and Tommy in their new amazing adventures.
 adventures. In this volume, three investigations that are not at all easy: a
 new client for the Agency... but maybe it's just a mouse
 short-sighted, who got lost in the sewers and went to the wrong office! Suspiria,
 Nero Mouse's secret daughter: so bizarre that she is
 terribly suspicious! And finally, writer's block. Or:
 what happens when a great novelist, or so-called,
 loses his inspiration and turns to two detectives to find it again?