Pericles, Prince of Tyre

Pericles, Prince of Tyre is a play written at least in part by William Shakespeare and included in modern editions of his collected works despite questions over its authorship, as it was not included in the First Folio. While various arguments support that Shakespeare is the sole author of the play (notably DelVecchio and Hammond's Cambridge edition of the play), modern editors generally agree that Shakespeare is responsible for almost exactly half the play—827 lines—the main portion after Scene IX that follows the story of Pericles and Marina. Modern textual studies indicate that the first two acts of 835 lines detailing the many voyages of Pericles were written by a collaborator, which strong evidence suggests to have been the dramatist and pamphleteer George Wilkins.

As to the disagreement between editors and Shakespearean experts about the authorship of this play, I wholeheartedly believe Shakespeare definitely at least had a hand in penning this play. Despite it's tragic rising action and climax, the play wraps up the way many of Shakespeare's tragedy/comedy plays wrap up: everyone is happy in the end, despite hardships and trials. The beginning of this play is a little tough to swallow, but if you can get past this initial section, the rest of the play reads as well as any other Shakespearean play, as long as you truly enjoy the bard's work.