Split Signal - T. Davis Bunn

nPeyton's migraines won't stop . . . but they're not what they seem. n nPeyton isn't convinced when Miami police declare her sister Evelyn's death part of a multiple suicide pact and close the case. So when the FBI reveal they believe Evelyn was murdered, and there could be a link to the recent FBI sting operation the sisters took part in, she agrees to work undercover at Etico, a California start-up turning the world of social media upside-down. n nBut Peyton is also experiencing uncontrollable migraines . . . and they're becoming more frequent. Scientists are perplexed that her brain doesn't follow normal activity during a migraine attack--in fact, the two sides appear to be working independently of each other. n nAs alarming discoveries are made at Etico, Peyton is sure these are not only connected to her sister's death but also her migraines . . . Can she find the missing link that will expose the truth? n nAn enthralling read for fans of twisty high-stakes thrillers, technothrillers, and science fiction from Blake Crouch and Andy Weir.n