Frankly, the title says it all -- because that's what I was doing throughout most of the show.  Screaming Silently is a trainwreck, I'm afraid, and no amount of cute stage business or earnest delivery can save it.  The play is about four adult siblings reunited upon the death of their egomaniac film-director father, one Giles Forbes.  In the style of such stories, the siblings return home to pay their last respects and rivalries and dark secrets emerge.