McLeod's Daughters (2001)

S4E24 Where There's Fire

Jodi Fountain, perpetually unlucky in love, finally seems to be on the path to happiness with the arrival of Luke Morgan. However, just as their relationship begins to flourish, Jodi's role in the Country Fire Service is put at risk when Luke becomes a suspect in a string of arson incidents. Initially, she stands by him, but as the investigation unfolds, doubt creeps into Jodi’s mind. Meanwhile, Tess and Nick, who are newly engaged, take a pre-marriage compatibility test and impressively score a perfect 100 percent.