Bob Shaw 
Tomorrow Lies in Ambush [EPUB ebook] 

Thirteen fantastical tales, including What Time Do You Call This? — a wildly ironic story about a bank robber who shuttles to an alternate universe and runs into himself. Communication — a modest plan by a shaman spiritualist gets out of hand when the dead begin to contact him. And Isles Where Good Men Lie — a space caravan of scale-armoured, bacteria-laden immigrants begins to make landings on Earth every twenty-two hours.. and is likely to do so for the next twelve centuries.