Ace, Aug 31 2010, $7.99
Sirantha Jax, March and their crew struggle with ending the death and destruction of jumpers in Grimspace. However as the peril from the man-eating Morgut expands, the Conglomerate has need of March. They want March to train an Armada whose missions will be to take the war to the deadly pirates and the Morgut.
Jax considers a perilous trek jumping through Grimspace without the use of beacons. Hesitating she wonders if her new nanotechnology will enable her to do the jump or kill her. However, while she vacillates, Jax also knows time is running out.
The fourth Jax science fiction (see Doubleblind, Wanderlust and Grimspace) continues the outer spaces escapes of the heroine and somewhat less March in the dark (sort of like leaping in grimspace without a beacon) bleak Aguirre universe. The story line is faster than the speed of light as Jax goes from one thrilling adventure to another though she is much more mature but still her philosophy remains shoot first or be killed; questions are irrelevant if you are dead. Fans of the saga will need to set aside time as Killbox is a terrific taut thriller, which sets up book five; newcomers can jump right in and appreciate this entry, but will relish it much more with the reading backlist.