The Unorthodox Engineers are a misfit bunch of engineers, commanded by maverick engineer Fritz van Noon and including, amongst others, a convicted bank robber as quartermaster (on the entirely-sound grounds that he was likely to be the most capable person for the job). They solve problems of alien technology and weird planets in the future.The Unorthodox Engineers contains:The Railways Up on Cannis (1959)The Subways of Tazoo (1964)The Pen and the Dark (1966)Getaway from Getawehi (1969)The Black Hole of Negrav (1975)