I wonder why Sergei Lukyanenko co-wrote the second Watch book with Vladimir Vasilyev. I think it's pretty odd to bring another author in all of a sudden. Like why was Vasilyev needed? The novel seemed similar to the first. Also, the English cover of the novel doesn't seem to mention Vasilyev, which is curious. In fact this picture of the Finnish cover I found doesn't include him either even though the print I read with otherwise identical cover has both authors' names on it.
