Mayo Street. It's a very desirable address. And it seems to promise the perfect suburban dream. Until three of the street's residents die.

Behind its respectable facades lie some terrible secrets, and in the course of one autumn many of them are shockingly exposed. Relationships come under pressure that not all of them can survive.

Enter a couple of unlikely sleuths - a teenage girl and a septuagenarian woman. Like their neighbours, both have plenty of problems of their own - growing up and growing old are tough enough without having a killer in your street.

Mayo Street takes a deep dive into suburban life in contemporary Australia, where things aren't always what they seem.