The Fibonacci Murders

"I start with zero. Nobody dies today." The strange note delivered to Lieutenant Detective Rick Peller of the Howard County, Maryland, police was just the beginning. Soon Peller and his colleagues find themselves chasing a cunning killer who is basing his crimes on the Fibonacci series, a mathematical sequence in which each number is the sum of the preceding two. And the only thing Peller knows for sure is that the series never ends.