This is what happens when you put a pair of unemployed teenagers in charge of a murder investigation. What we lack in investigative skills we make up for in free time.

Heidi's meant to be having the time of her life on exchange in Switzerland, but instead she's cold, alone and on an involuntary dairy-free diet. So when she hears the news of her brother Felix's death, she's quick to jump on the first plane home to Perth.

To be completely honest, Felix wasn't that much of a brother, so Heidi's not that sad – but she's not exactly happy either. Thanks to an epic betrayal by her (ex) best friend and (ex) boyfriend, Heidi has absolutely nothing to do and no one to talk to. No one, that is, except Patrick, the wisecracking younger brother of Felix's widow, who convinces her that they need to investigate her brother's mysterious demise.

Can Heidi and Patrick get to the bottom of Felix's death – and do they really want to?