The shadowy boundary between comedy and tragedy is repeatedly probed, as is the question of why, 400 years on, Shakespeare's ghost is so difficult to lay.
A sense of a shadowy world of shifting boundaries and rules appropriately pervades the first half of the play, which is largely devoted to accounts of how three of the men initially came to be arrested.
Any crossing of these boundaries invokes a shadowy organisation called Breach, which exists to police the separation.
Mr. Bush would be asserting the same power to take on a shadowy network of adversaries with no geographic boundaries, in a conflict with no foreseeable end.
The ever-morbid Edgar Allan Poe, who said that the worst thing was to be buried alive and that "the boundaries which divide life from death are at best shadowy and vague," was initially buried in 1849 in Baltimore at a grave marked only with the number 80.
These men approach their work like artists, and the boundary between superior technique and genuine art traces a shadowy line through Mr. Mann's films.
Shadowy fragments float like displaced apparitions, conflating the interior and exterior environments and blurring the boundary between the two realms.
Everything was grey and shadowy.
Those soft shapes, shadowy inside.
