This issue has variants.
Some copies contain a 12 page insert for the Mask comic series.
On sale date from Meanwhile column in Secret Origins (DC, 1986 series) #4 "(Week of...)".
story continues in Detective Comics #564; Story title from Ralf H. Kienzle on 12 September 2004 (confirmed by Matthew Z. Head on 19 September 2004); was previously "Box-Office Smash."