Cassandra Clare wrote The Mortal Instruments Boxed Set: City of Bones; City of Ashes; City of Glass
[Human]: Could you recommend some work by Cassandra Clare? [Assistant]: Sure! Cassandra Clare wrote The Shadowhunter's Codex. She also wrote The Mortal Instruments Boxed Set: City of Bones; City of Ashes; City of Glass. [Human]: I read The Mortal Instruments set and loved it, are there any similar books to those? [Assistant]: There is a similar book to The Mortal Instruments called The Iron Trial. Have you heard of that one? [Human]: I haven't heard of that one. Is it by the same author or someone else? 
Yes. Cassandra Clare wrote The Iron Trail as well. 