THRESHOLD! The northernmost town in the Duchy - and your last stop before your adventures begin. Threshold, the gateway to mysterious castles, lost temples, deadly caves and caverns. You have heard the stories and legends, now you wish to see for yourself.

This product provides a complete campaign adventure that will take beginning characters from 1st all the way to 3rd level and possibly beyond, drawn from the first nine modules of the B-series adventures.

Included in this module are in order of appearance material from:

B9 Castle Caldwell (four of the five short adventures)
B8 Journey to the Rock (one of the three possible trails to The Rock)
B1 In Search of the Unknown (only a brief note on option quest using map included with other maps at end of module. no descriptive text from this adventure)
B2 The Keep on the Borderlands (Caves of Chaos only, no Keep)
B3 Palace of the Silver Princess (complete)
B5 Horror on the Hill (the adventure in the Hill only, no lead-in encounters)
B7 Rahasia (complete)
B4 The Lost City (upper five pyramid tiers)
B6 The Veiled Society (complete)