Elizabeth A. Harvey

Rachel Morgan, witch-born demon, has one unspoken rule: Take chances, but pay for them yourself. With it, she has turned enemies into allies, found her place with her demon kin, and stepped up as the subrosa of Cincinnati—responsible for keeping the paranormal community at peace and in line. Life is...good? Even better, her best friend, Ivy Tamwood, is returning home. Nothing’s simple, though, and Ivy’s not coming alone. The vampires’ ruling council insists she escort one of the long undead, hell-bent on proving that Rachel killed Cincy’s master vampire to take over the city.

The Martian meets Gravity when Army Pilot Vaughn Singleton, Earth’s last man, rushes to Area 51 in search of a spaceplane after he discovers the last woman is stranded on the International Space Station and barely alive - thus beginning a race against time. The event that wiped life from the planet started at the supercollider. It created a rift in space-time. The astronaut stranded aboard the space station, Commander Angela Brown, is a theoretical physicist who used to work at the collider.

Having journeyed through time in order to restore peace to the galaxy, Cal Carver and Space Team are a little dismayed to find out they may have inadvertently made things even worse...whoops.