The book I am trying to find was one of my favorites in the mid 1980s – not sure when it was published. The entire book is illustrated in an interesting way – every page is sort of sepia/black and white. The plot: a boy who is invited over to his friend’s house for dinner, but when he arrives at her house, no one is home. He sits on her stoop feeling sure that the friend doesn’t like him anymore. Later, the friend and her mother come home, and the friend tells the boy an incredible story about why they were so delayed. She tells him they were stuck in a parade – and I seem to remember something about a truck spilling molasses or some other gooey substance all over the street at the parade. The boy thinks the friend is lying, but the next morning he realizes she was telling the truth because it’s in the newspaper. The girl’s name MIGHT be Emily and the boy’s name MIGHT be Horace (these names could be wrong).