A Conspiracy of Angels

What happened to the angels who rebelled against God and were cast down from Heaven? It is evident that they were imprisoned in earth's vicinity; their former galactic freedom taken from them. Until the time of final judgment they must share life space with God's earthly creation. Does their rebellion toward God continue in this terrestrial sphere? Have Satan and his fallen legions conspired through the centuries to pursue a campaign of evil against God's earthly purpose for man? Do we possess the ability to recognize and thwart their evil strategy today? We can say with reasonable confidence that there has never been a book on the subject of angels like "A Conspiracy of Angels."