LIKE, OH MY GOD. 
 JEM CARSTAIRS I LOVE YOU. 
 So this is about Tessa Gray/Grey (idk) and she was looking for her brother one day when 2 crzy old ladies takes her in, claiming that her brother said so. They make her discover a shape shifting ability that Tessa never knew she had. Then, one day, the "ever so handsome" Will Herondale, a shadowhunter, (aka, GhostBuster) saves her from the women. Now with the help of her new friends, Will, Charlotte, and Jem she will find her brother. But the situation is a lot more complicated than it seems.. 
 Okay. Now to start talking about the guys as I always do. 
 So, there's Will Herondale. The usual "black hair blue eyes combination". He is horrible. He doesn't care about anyone's feelings at all. Especially not Tessa's. And his looks are the only thing good about Will, and the only thing Tessa likes about him. 
 Then...There's Jem Carstairs. The unusual silver hair silver eyes. He's kind. He's patient. He never gets angry (but if he does, watch out). He 
 plays the violin 
 for crying out loud! There is nothing to not like about him! Except one thing...He's dying. He was bit by a demon and now he only has a year or 2 to live *cries*. Tessa likes Jem for his looks and for his heart, and Jem just plain loves Tessa for who she his. 
 So, as you can probably guess, there is a love triangle. I don't have problems with love triangles. I think it's fun to make teams and ships. The only thing is, WHAT KIND OF GIRL IN THE WORLD WOULD BE SO IMPORTANT AND SO AMAZING THAT THERE WOULD BE 2 GUYS FIGHTING OVER HER?! I know it's fictional and all, but still, WHAT IS IT ABOUT TESSA THAT BOTH OF YOU LIKE, WILL AND JEM?! TESSA ISN'T ALL THAT GREAT, YOU KNOW!