Douglas McKerrell, an American, has inherited the title of Laird of Strathbeg. His agent, John Robson, went ahead to visit the estate and reported back disturbing news. On the advice of Dr Albans at the EPS in Edinburgh, McKerrell engages the assistance of two seasoned occult investigators and a local doctor.
Together, they travel to St Combs, a small fishing town north of Aberdeen. McKerrell discovers that Robson apparently left the local inn, “The Sigil”, where he was staying. The publican, Duncan Calder, is friendly and generous with the local whisky but can provide no helpful information about Robson’s whereabouts.
Markus breaks into the local fish cannery. It appears that the harbour master, Connor Andrews, is taking detailed records of his workers and other visitors to the town.
The investigators explore the ruined castle of Strathbeg. Markus is assaulted and pursues his attacker to the boat house by the loch. The discover a hidden temple and gun down the worshippers inside.