Corona is not, alas, an illusion to alcohol, but the name of the sentient being that controls the hapless Vulcan scientists that Kirk and crew have come to save. A fast-paced novel with an intriguing sci-fi basis, this episode rushed along too quickly for me to really get into the story. This is really too bad, as there are several elements to the story which could have been drawn out and delved into. At 192 pages, it's not the shortest Star Trek book I've read, but it felt like it.
The characters come off pretty well, with Bear's Kirk being more thoughtful and less gut-instinct than Shatner's. While entertaining and fun, Corona will not rock your world and adds nothing to the Star Trek universe. Rating: Meh
Kirk and Spock - B
McCoy and Uhura - B+
Checkov - B-
Everyone else: too little seen to judge