He wrote , Nightmare Blue ( 1977 ) with George Alec Effinger . Dozois also wrote Hunter 's Run ( 2008 ) with George R. R. Martin and Daniel Abraham . He is the author of one solo novel , Strangers ( 1978 ) , as well as a collaboration with George Alec Effinger , Nightmare Blue ( 1977 ) , and a collaboration with George R. R. Martin and Daniel Abraham for Hunter 's Run ( 2008 ) .