The perfect neighbours / Rachel Sargeant.

"The perfect neighbours tell the perfect lies… When Helen moves into an exciting new neighbourhood, she finds herself in a web of evil with no escape. Behind the shutters lies a devastating secret… When Helen moves abroad with her loving husband Gary, she can’t wait to meet her fellow expat teachers from the local International School. But her new start is about to become her worst nightmare… As soon as the charming family across the way welcome Helen into their home, she begins to suspect that all is not as it seems. Then Gary starts to behave strangely and a child goes missing, vanished without a trace. When violence and tragedy strike, cracks appear in the community, and Helen realises her perfect neighbours are capable of almost anything…" --Publisher description.