All 4 books in the Shatterspace series are free on Amazon for a short time! Orchestra of Shadows, Broken Horizon, Aphelion and Echoes of Cataclysm, the latest release, are all free!
https://www.amazon.com/dp/B074B4JNF5
The Earth, the central hub of the Interstellar Federation, was obliterated by an alien craft. Over two hundred years later, human civilization has rebuilt and persevered. However, dark forces within humanity have reverse-engineered terrifying weapons from the alien threat. A war is brewing that will shatter space itself.
"A remarkable read", "Nicely done space opera", "A fantastic read" are some of the nice things reviewers have said. Please review it if you read it! I hope you enjoy!
UK:
https://www.amazon.co.uk/dp/B074B4JNF5
Canada:
https://www.amazon.ca/dp/B074B4JNF5