Australia, 1979. It's the height of summer and on a quiet suburban cul-de-sac a housewife is scrubbing the yellow and white chequered tiles of her bathroom floor. But all is not as it seems.

For one thing, it's 3 a.m. For another, she is trying desperately to remove all traces of blood before they stain. Her husband seems remarkably calm, considering their neighbour has just been murdered.

As the sun rises on Warrah Place, news of Antonio Marietti's death spreads like wildfire, gossip is exchanged in whispers and suspicion mounts.

Twelve-year-old Tammy launches her own investigation, determined to find out what happened, but she is not the only one whose well-meaning efforts uncover more mysteries than they solve. There are secrets behind every closed door in the neighbourhood - and the identity of the murderer is only one of them.