Collection includes"Naught for Hire" and "Naught Again" from Analog.

Portuguese title: Misterios do Futuro.

Poruguese title: Desvio Para O Vermelho.

Issued in two volumes.

Cover for volume 2:

(not yet received)

One difficulty for bibliophiles: the edition "The Visitor" is attributed to a novel titled ALIEN VESSEL, which was a working title before the final RECKONING INFINITY title was selected.

Italian title: Vuoto di Memoria.

Italian title: Canali di Morte.