Chronicles of Cassidy Books 1-4

Read books 1-4 in The Chronicles of Cassidy series in this collection.Something strange is going on with my sister, and I''m bound and determined to figure out what it is. When her friends start dying, she starts hanging out with weird strangers dressed all in black, and disappears for weeks at a time, I start to think my sister is a vampire.Knowing the truth not only opens my eyes to a secret wor...