Police find a Russian family brutally murdered in a Silicon Valley home, a co-developer of the video game Tetris among them; something doesn't sit right with detectives, and it has to do with evidence -- or, more importantly, the lack of it.

Determined to prove that Tetris co-developer Vladimir Pokhilko did not kill himself and his family, retired crime scene investigator Sandra Brown returns to the crime scene and uncovers more jaw-dropping discoveries.