Mark J Handwerker: 4 books

SPACE SENTINELS I: THE BENEFAX ALLIANCE is the first in a series of space adventures featuring young Sentinel Albie Storm. Albie and his friends are kidnapped by gruesome aliens, entrenched on the moon and readying to attack Earth. With the help of an android of the Benefax Alliance, the teens face torture and death as they battle to stop the hideous invaders planning to enslave the galaxy.

In SPACE SENTINELS II: THE MIRRORS OF PLUTO, transmorphing Arpoids from the planet Maggotia arrive on Earth through a space-warp portal. Only Albie Storm and the Space Sentinels can stop the Arpoid invaders from succeeding in laying the groundwork for another all out assault on Earth

ICARUS AFLAME is the first in a series of Gordian Palmer sci-fi spy thrillers. As an agent of Project Icarus, a top secret department of the Central Intelligence Agency, Palmer is sent on a mission to stop Xian, a merciless humanoid operative of the Belial star system, before the alien succeeds in helping an infamous Quuraki dictator develop the first hypersonic aerospace bomber.

On a cave exploration with their Uncle Ned, Danny and Donna Davenport find more excitement than they bargained for. More dangerous than the deep caverns and sharp jagged rocks, tight suffocating crawl spaces, and bats flying free in the darkness, the twins encounter a host of unsavory, freakish characters. To save their lives, they must make an impossible ESCAPE FROM CONVICT CAVE.