Henry Slesar 
Space Brat [EPUB ebook] 

In the quiet suburban night, Mr. Gertz is exasperated by the relentless crying of the new baby next door. Little does he know, this baby is no ordinary infant. On the distant planet of Nahrla, the War Council debates the perfect form for their undercover agent to infiltrate Earth, choosing the guise of a human baby for ultimate trust and access

As the Bryans celebrate their adoption of this mysterious foundling, their true alien allegiance to Jeheera remains hidden. With tensions rising, this seemingly innocent child becomes the focal point of an interplanetary conflict that could change Earth’s fate forever.