Planescape - The Deva Spark

From the web:

The Deva Spark is a Planescape adventure for a party of four to six characters of 5th to 9th levels. From the blasted pits of the Abyss to the peaceful forests of Elysium, the heroes track a barmy bebilith who holds the key to saving the life of a dying deva. Can your characters handle the fire of the deva spark?"