Shadows takes place during the first half of Smallville Season 2. The events of 2x05 "Nocturne" are referenced, but it must be before 2x13 "Suspect;" during the brief time when Martha Kent was working as Lionel Luthor's assistant. Not that this factors into the plot at all, but it is referenced quite often.
This is one of the weaker Smallville tie-in stories. Nothing about the plot makes sense - we have a scientist, Farley, who had his funding revoked, but somehow got backing from "Continental Science of Europe." (??) Anyway, Farley comes to Smallville to continue his illegal research using meteor rocks (kryptonite) on human test subjects. For some reason he decides he has to do this in a decomissioned missile launch facility that's left over from the Cold War. Also, he brings his teenage daughter along. And finally, in a move that defies you to find the logic in it, he infects his special ex-CIA enforcer with the same meteor rock formula, despite knowing that it causes severe mental deterioration.
Sure, Smallville can get pretty silly, but this is absolutely nonsensical. I can forgive a stupid plot if the book is fun and entertaining, but Shadows is, on top of everything else, boring!
There aren't even any fun subplots or character interactions to make this worthwhile.
Farley's daughter, Sharon, enrolls at Smallville High and develops a crush on Clark Kent. The insertion of a teenage girl OC seems to be a prerequisite of these Smallville tie-in novels and I really don't understand why. She insinuates herself at the Torch and proceeds to quickly annoy everyone.
There's a bizarre subplot about Lex playing World of Warcraft and considering using his LexCorp capital to develop a competitive MMORPG. Haha wtf is this? This has nothing to do with anything and is completely out-of-character.
Jonathan Kent comes off as somehow even more awful than he was in the show, determined to sue Lex - even at the risk of losing the family farm! - because an old man in the community died from mysterious causes. It must be Lex's fault! How? Why? Jonathan claims the old man could have possibly died from some contamination caused by the Luthor fertilizer plant - except that Jonathan knows about the kryptonite! So, unlike the rest of the town, he should not be blaming the fertilizer plant.
This one didn't work for me. Sadly, a disappointing Smallville read.