What is the author's style in Along Came a Spider by James Patterson?

The novel is written in simple English that uses very little slang or otherwise difficult to understand language. Cross is a cop, but he is also a psychologist, therefore he is quite educated and his language reflects this. There are times in which Cross speaks with people whose speech is less educated, but this is not often and does not complicate the dialogue. This novel also does not include the professional dialect often used in novels and television shows that revolve around police procedure, again making it easier for the reader to understand the plot.