A 13 part series about the adventures of a group of children living in Wainamu, a small town in the centre of New Zealand's thermal region in 1900

Sir Charles Pemberton (Terence Cooper) travels to New Zealand from the United Kingdom on the advice of his doctor. Once there, he has the idea to build a health spa on Māori land. The story portrays the conflict between the world of the Māori and the white settlers.

Main cast:
Tom - Paul Alrey 
Sarah Jane - Rachel Weston
Davie -  Jan Narov 
Hema - Ross Duzevich
Kiri - Melissa-Aroha Baker
Sir Charles Pemberton - Terence Cooper 
James Gregory - Peter Vere-Jones  
Elizabeth Gregory - Marion Parry
Gilfillan - Waric Slyfield 
Emily Gregory - Keri Johnson 
Miss Proctor - Maggie Maxwell
Doomy Dwyer - Martyn Sanderson 
Mabel Dwyer - Helen Dorward
Sid  - Mark Hadlow
Te Porinul - Tamahina Tinirau  

Production Company - South Pacific Television
Executive Producer: John McRae
Producer: Roger Le Mesurier
Script Writer: Roger Simpson
Director: Peter Sharp

Episodes:

1) Tom (23/9/1979)
Trouble with Doomy Dwyer, the local butcher, and the arrival of some very aristocratic guests at the Albion Hotel add up to a rather depressing day for Tom. Sir Charles Pemberton and his granddaughter arrive in New Zealand. Sarah Jane's first meeting with Tom, the son of the hotel owner where Sir Charles stays, isn't a success when he is rude to their English guests.

2) Miss Prim (30/9/1989)
Sarah Jane's arrival in Wainamu continues to plague Tom Gregory and his gang. Sarah Jane tells Tom that the strange Māori who helped save their train from disaster is in town. Tom says it's Te Pourinui.
Christopher Bain - John Givine 
School Master - Bill Johnston
Captain Bloom - Peter McCauley 
Guide Anna - Esther Davis
Tamati - Mark Bennett 
Ferry Man - Kari Bradley 

3) Double Trouble (7/10/1979)
The arrival of a recruiting officer brings excitement to the town, but Tom's enthusiasm is once again dampened by a run-in with Doomy Dwyer. Someone has been making drink illegally and selling it to the Māoris.
Captain Brown-John - Tom Bradley

4) The Taniwha (14/10/1979)
Things continue to go wrong for Tom Gregory with his aristocratic English foes. Even a last-ditch attempt to improve matters backfires. Sarah Jane has become intrigued with the Māori village destroyed by a volcanic eruption. Tom and his gang are trying to convince the police that Doomy Dwyer is guilty of distilling illegal grog for the Māoris.
Rushworthy - Bill Johnson
Schoolmaster - Don Farr
Te Pourinul - Tamahina Tinirau

5) Initiation (21/10/1979)
At last there appears to be a truce between the Tom Gregory gang and the little English aristocrat. Sir Charles has found the perfect site for his spa hotel, but it is on Māori land. Tom and his gang try to frighten Sir Charles and his granddaughter away, but it is only the governess who leaves.

6) Confrontation (29/10/1979)
With the gang once more in harmony the pursuit of Doomy Dwyer can be renewed. But what is the strange evidence Christopher has found? Sir Charles wants to build a spa hotel on land claimed by the Māoris to be sacred and 'tapu'. Sarah Jane is initiated into Tom's gang and to prove her bravery is to visit the old Māori village at night.
Vigilante Leader - Paki Cherrington

7) Dark Secrets (4/11/1979)
At last the gang seems to be getting some- where in their pursuit of Doomy Dwyer, but could it be that Tom has risked more than he should? Doomy Dwyer's deals are always suspect. He is trying to sell land to Sir Charles. Tom's gang believe Doomy has an illegal distillery and at last discover the store of drink.

8) Black Magic (11/11/1979)
The arrival of two strangers in Wainamu leads to the disappearance the townsfolk. Tom, Davie and Sarah Jane have found the still for making illegal grog in a sacred Māori burial cave. Sir Charles is buying some 'tapu' land. Strange things begin to happen.
Doctor - Alan Carlisle 
Findlay - Desmond Woods
Davies - Norman Fletcher

9) The Ghost of Doomy Dwyer (18/11/1979)
The mystery of Doomy's disappearance deepens, and strange occurrences at the lakeside bring unease to the town.
When Doomy Dwyer finds the customs men suspect him, he collapses then wanders away in the night. Has he fallen in the hot spring? Tom sees Sid digging a 'grave'.
Christopher Bain - John Givine 
Findlay  - Desmond Woods 
Davies - Norman Fletcher 
Vigilante Leader - Paki Cherrington 
Surveyor - Geoffrey Clenden

10) Heroes (25/11/1979)
At last success seems to be within the grasp of our gang. But what of Christopher's strange discoveries? Sir Charles starts building the spa hotel on the land once owned by the Māoris.

11) Mafeking (2/12/1979)
Excitement runs high in the town as news of the Imperial victory arrives. Why has the level of the lake risen? Has Sarah Jane really seen a Māori war canoe?
Mrs Evans - Jacqui Dunn 
School Master - Bill Johnson 
Doctor - Alan Carilele

12) Evacuation (9/12/1979)
With Christopher's and Guide Anna's predictions apparently coming true, the town of Wainamu seems to be in great danger. The volcano starts to erupt and Tom realises that Sarah Jane is missing.

13) Farewell (16/12/1979)
When the volcano erupts, Sir Charles hands back the title deeds to the Māoris.

Palo let me know this has had a Czech language DVD release with some pretty cool cover designs: