Sherlock Holmes A Study In Scarlet (p35- 69)

Within the contents of these pages, Holmes and Watson are visited by a man named Gregson who tells them that he has captured the murderer. Lester also tells Holmes that Stangerson has died by being stabbed through the heart. The unusual part about this murder is that the word Rache has been found above his body, just like the first murder. Holmes then learns that Stangerson had some pills on his body. So he tests the pills on a dog that was outside. The first pill was harmless (which Holmes found out after some confusion), but the second pill was poison and killed the dog.
After that Part 1 ends and part 2 begins, being called "The Country of Saints". In this part, instead of continuing with the murder, the story strangely flashes back to 1847 in Utah. During this time a man named John Ferrier and a little girl were the only survivors of a group of pilgrims. Later, a group of mormins find them and take them in only if they take in their faith. Even more later in time the little girl, named Lucy, grows up and becomes engaged. Then there is some drama about Lucy not being able to marry the man because he is not a mormin and some danger gets involved.
I did not like the way part 1 ended and thought that the story was about to end. I also did not like how part 2 began because it seems that the flash back has nothing to do with the story. I hope it does...