Yeah, they made four books into a large one, then cut the fifth one. weird...
the thing is, i heard it was very, VERY different. not as good as the others, and very depressing. Arthurs all by himself...
Its called mostly harmless if you're still interested, but i was told not to read it, so maybe you shouldn't.
I read the salmon of doubt, and Douglas adams talks about how he was having a really bad year when he wrote it. He planned to write a 6th one, happy, and that had everyone in it...but he had to die like that....(CRY)
a heart attack on a treadmill(not sure if the treadmill part is true)
in 2001...