Sphinx of Centaurus (Unabridged‪)‬

Earth's deep-space probe must find the Tititri. To save the earth. Or destroy it. Landon Walker must learn the Tititri's intent, but finds it impossible to communicate with them. Only his young daughter speaks Tititri. And only when possessed by them. Can he manage first contact? Can he control his trigger-happy crew? Can he save earth?