Phantoms Inc vs The Black Knight by Darren Floyd

Conner Deal and Marshall Thompson of Phantoms Inc are 'ghost detectives'. Investigating hauntings and eerie events of all kinds, they uncover information from cold cases which elude traditional detectives.
While Conner has an intuitive grasp of everything technological, Marshall picks up echoes of past events from a myriad of objects and is even able to speak to the dead.
But no ghosts means no money. Phantoms Inc's finances are in a perilous state when Tania Voight walks into their lives. Regaling them with tales of her great grandfather's extraordinary work communicating with a mysterious ancient alien satellite dubbed 'The Black Knight' she makes a shocking revelation.
After 150 years of silence, the Black Knight has started transmitting again.
While tracking the coordinates of the transmissions to an abandoned Cold War base in Antarctica, Deal and Thompson also discover that others lurk in the shadows. A powerful, secretive organisation named Majestic 12 are trailing them, desperate to harness the satellite's power.
Reaching the frozen base, Deal and Thompson then make a horrifying discovery.
Something lurks beneath the ice and The Black Knight is about to awaken it.