Mr. Petersen, a local merchant, begins selling cornmeal for half the price of that set by Mr. Hansen. Naturally, the locals snap it up as they can, quite literally, get two sacks for their baking for the price of one.
All is well until a young boy and his mother go down with a raging fever. At first, Doc doesn't know what is causing the strange fevers, but when a patient becomes covered in a nasty rash, he realises he is dealing with Thyphus and that the source needs to be found before many more people die.
Meanwhile, the Ingalls family are safe from the illness, but as Charles has been exposed to it, he assists Doc Baker and the Reverend Alden as they set up a make-shift hospital in the church. After several deaths, the doctor is no closer to tracking down the source until a chance remark leads he and Charles to Mr. Peterson's barn, which is full of cornmeal sacks and crawling with rats. The building is burned downed and there are no new cases of the illness. This does not take away from the fact that many have died.
A very heart-wrenching episode with superb acting by all regular and guest cast. Fantastic work all around.





