Witness: William Tyrrell

Lyn and Chris Dawson appear to have the perfect marriage. He's a star footballer and popular high school teacher. She's a devoted wife and mother. They share a beautiful home above Sydney's northern beaches. But when Lyn goes missing, dark secrets are buried. This is no fairytale, but a sordid story of strangely close twin brothers, teenage student lovers, and probable murder. The Australian's Hedley Thomas digs deep into a cold case which has been unsolved for 36 years, uncovering startling new evidence.

Shandee Blackburn was brutally murdered as she walked home from work - but this cold-case can still be solved. Gold Walkley-winning journalist Hedley Thomas - who created The Teacher’s Pet and The Night Driver - goes deep to find out who killed Shandee, and why.  Episodes of the podcast first, plus exclusive stories, videos, pictures and extraordinary evidence are available with a subscription through The Australian's app, or at shandee.com.au To contact Hedley Thomas anonymously with any information on Shandee's Story email here - Shandee@theaustralian.com.au

Theo Hayez is missing in Byron Bay, a beautiful beachside town on Australia’s most easterly mainland point, frequently in the spotlight for its famous residents. Theo's from Brussels. He's 18 and on a backpacking holiday when he vanishes in May 2019. Behind the scenes local volunteers who've never met Theo begin searching and investigating with his family, parallel to a major police investigation. At the request of Theo's family, The Australian newspaper's national crime correspondent David Murray joins the unofficial search party to investigate the mysterious disappearance for a new podcast series, The Lighthouse. Theo left a local bar around 11pm. As the search narrows to the area around the 118-year-old Cape Byron Lighthouse, a range of theories emerge. From the newspaper that brought you The Teacher's Pet and Who The Hell is Hamish, The Lighthouse investigates all possible scenarios as it takes you inside an extraordinary search. To read more about the disappearance of Theo Hayez, and access exclusive photos and video material, go to www.lighthousepodcast.com.au.

He was born Hamish Watson, a surfie dude from Sydney – but he could morph into whatever you needed him to be. Hamish is due to be sentenced to jail in early 2019 for swindling a handful of victims out of more than $7m. But these crimes are just the final pages in a resume too thick to staple; for decades he’s duped victims in the US, Canada, Britain, Hong Kong and Australia. How did he do it? How did he evade authorities around the world for so long and what’s he done with all those tens of millions of dollars he stole?

An outback town, a missing man and 11 people who mostly hate each other. Kylie Stevenson and Caroline Graham get Lost in Larrimah.

Janine Vaughan’s disappearance 19 years ago is at the heart of a mysterious case that has split a close-knit community left wondering if a murderer walks among them.