Manfred: the Confession of an Alien

A degraded, not very healthy, deeply disappointed, rather gloomy, - in general, a typical specimen of the species Homo sapiens, - an alien named Tsorrgh appears.

What could this uninteresting Manfred possibly offer to a representative of a highly developed civilization? Manfred triggered an intergalactic alarm: he himself or someone nearby came up with the RIGHT IDEA, which could reveal to humanity the existence of extraterrestrial civilizations, yet humanity on Earth has not reached such knowledge. Tsorrgh had already prevented similar discoveries when they were approached closely by Bosch, Descartes, Ada Lovelace, and Einstein. To bring Manfred into shape, take control, study his surroundings, throw him off the trail, and disappear unnoticed? Easy as pie. But soon, the improved and unexpectedly more intelligent Manfred meets again the love of his youth, Sabina, a rather complex individual with her own mission, and the alien undercover operation turns into a risky whirlwind of life and sanity.