In 2016, Graff published a companion novel to A Tangle of Knots entitled A Clatter of Jars. This second novel follows a group of characters at Camp Atropos for Singular Talents, a “haven for the most remarkable children in the world” (233). The protagonist is Liliana “Lily” Vera, a girl with a Talent for moving objects with her mind. After a glowing jar is dropped to the bottom of Lake Atropos, dangerous events begin to occur, and individuals’ Talents and memories are somehow swapped. Lily and her fellow campers must team up to unravel the mystery.

Like A Tangle of Knots, A Clatter of Jars combines mystery fiction with fantasy elements and explores themes of family, identity, and human connection. A Clatter of Jars expands upon the world-building first laid out in A Tangle of Knots. For instance, the Owner is not the only person capable of stealing Talents, and people with this ability are called Ekers. Those with a similar yet distinct ability to pass Talents on to other people or objects are known as Coaxes. Camp Atropos is located just outside of Poughkeepsie, New York, the setting for much of the first novel.