Plot
When Hetty Farlane and her mother arrive at Calder Towers for employment, she finds the house is haunted by an evil-looking woman and the children are behaving just as evilly towards her.

Notes:
- Artist: Hernan Antonio Torre Repiso
- Reprinted and translated to Dutch as “Hetty en het geheim van het grijze huis ” – Groot Tina Boek #6 (1978)
Appeared:
- Hetty in the House of Secrets – Spellbound: #22 (19 February 1977) – #31 (23 April 1977)
- Reprinted as House of Secrets – Judy: #1610 (17 November 1990) – #1619 (19 January 1991)








