The Stargate Black Hole
by V Bertolaccini
A classic SF masterpiece with two SF action thrillers! A secret agent probes scientists creating a stargate after time warps and black holes are made in particle accelerators in space, and enters it and hurtles through a gateway, and a starship crew is attacked by a devil-like presence in deep space and leave space and time, and in a minding-bending universe meet one of the most deadliest menaces!