**Fifty years after The Andromeda Strain made Michael Crichton a household name --and spawned a new genre, the technothriller--the threat returns, in a gripping sequel that is terrifyingly realistic and resonant.** “The Andromeda Strain,” as millions of fans know, described the panicked efforts to stop the spread of an alien microparticle that first turned human blood to sawdust and then dissol...