H.A.L.F.: The Deep Beneath review

Three teenagers in the desert find out about a secret government program that has been making alien human hybrids since the Roswell crash.  They end up getting captured and taken to the facility.  While there they find out why the hybrids were created and that from the hybrid that they helped the aliens are coming back for the hybrid.
    I thought this book was really suspenseful and I could not put down my tablet while I was reading it.