The Telwynium: Book Three - The Shadow of Spring

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The Summer King walks! The fellowship from Willows Dene has been split asunder, each a prisoner in grave, tomb or cell. Each faces their own peril, with only their wits to guide them against merciless brigands, the living dead, shadowfell, and the witches of Targoth.

The Telwynium: Book Three is an early 90s style point and click, with Sierra SCI0 style graphics, but with a fancy new-fangled point 'n click interface.

Source: IGDB