11 a.m. to 1 p.m., Browseabout Books, 133 Rehoboth Ave., Rehoboth Beach. Deitch will be signing copies of “A Fine Grain of Sand,” the fifth book in her Trudie Fine Mystery Series. “A Fine Grain of Sand” tells the story of a murder at a wedding in Rehoboth Beach. For more information, go to browseaboutbooks.com.