Some of our agents have spent months spying on the person known as Fredo Cacahuete.And it seems that he is starting to suspect Ka... For now, everything is going according to plan. But, whatever happens, no one can know our location, or the identity of our members... Thus begins the first volume in the series about Fredo Cacahuete, who solves mysteries and arrests criminals, like all the best detectives. He counts on the help of his friend Aníbal (who is not very skilled in this line of work but gives it his best shot) in gathering clues at crime scenes: a fingerprint at a jewellery robbery, a motive for alien abductions, a hidden alibi in cinematic mysteries... Fredo Cacahuete is also a secret agent. Always undercover, he carries out the most risky missions given to him by his "bosses", who are even more secret than he is.