第 5 季 共 12 集
播出时间：2019年5月7日
第 1 集 The Return
播出时间：2019年5月7日
Hetty and the gang play a prank on Sheila, but it has disastrous consequences when a young visitor with a secret arrives to stay at Calendar Hall.
第 2 集 The Proposal
播出时间：2019年5月14日
Jack has a romantic proposal in mind, but a new butler spells trouble for the gang, while Ashok reveals his secret – a priceless diamond hidden in Calendar Hall.
第 3 集 The Hidden Compartment
播出时间：2019年5月21日
The gang follow clues as they search for the Dawn Star, not realising that Ambrose is looking for it, too. Rosamund surprises everyone when she brings an old enemy back to the house.
第 4 集 The Folly
播出时间：2019年5月28日
Hetty and the gang find crucial clues to the Dawn Star.
第 5 集 The Tunnel
播出时间：2019年6月4日
Lizzie discovers a secret tunnel with a clue, while the gang races Ambrose to find the jewel, and Hetty fears that Ashok is growing too friendly with Lady Grenford.
第 6 集 The Parchment
播出时间：2019年6月11日
The gang realise they need to break through a wall to get to the jewel – but can they do it without being discovered? And what will Agnes do when she finds out Gideon’s been lying to her?
第 7 集 The Secret Door
播出时间：2019年6月18日
The gang realise they need to break through a wall to get to the jewel – but can they do it without being discovered? And what will Agnes do when she finds out Gideon’s been lying to her?
第 8 集 The Accused
播出时间：2019年6月25日
The gang are stunned when Hetty is accused of stealing the Dawn Star, and a fire in the barn leads to a dramatic escape.
第 9 集 The Search
播出时间：2019年7月2日
Hetty, on the run in London, is shocked to discover an old friend in the workhouse. Back at Calendar Hall, the gang have a plan to prove Hetty is innocent and that Ambrose is the real thief.
第 10 集 The Homecoming
播出时间：2019年7月9日
Hetty and the gang race back to Calendar Hall to stop Ambrose before anyone gets hurt, and to discover the truth about what really happened at the house.
第 11 集 A Christmas Adventure - Part 1
播出时间：2019年12月13日
Part one of a musical special. It's Christmas Eve and Hetty and Gideon are on a charity mission to London when they are caught up in a street gang that is run by Hetty's oldest, most frightening enemy.
第 12 集 A Christmas Adventure - Part 2
播出时间：2019年12月28日
Part two of a musical special. It's Christmas Eve and Hetty and Gideon are on a charity mission to London when they are caught up in a street gang that is run by Hetty's oldest, most frightening enemy.
