Now Plan-B comes full circle with "Radio Hour: Frankenstein," a staged production of the Mary Shelley classic, adapted by Matthew Ivan Bennett, that will also be broadcast before a live audience in the theater on Halloween. The result is a fascinating fusion that is exciting to listen to and even more entertaining to watch.

The staging is simple - just four actors seated on stools with microphones, backed by two technicians who concoct all the sound effects on an eclectic clutter of equipment, ranging from a wash tub and metal sheet to dribbled handfuls of rice. But adding the audience generates an electricity between performers and listeners that can't be duplicated by tuning in at home

Radio drama is particularly challenging for actors, who must create characters, story and milieu using only their voices. Tobin Atkinson, Doug Fabrizio, Jay Perry and Teresa Sanderson are an extremely well-matched and versatile ensemble. Fabrizio portrays Victor with an energetic mix of longing, madness, grief and guilt, and Atkinson grunts, grimaces and growls as the malcontent monster.

Jennifer Freed and Sam Mollner subtly and seamlessly integrate all the sound effects in Cory Thorell's detailed sound design. David Evanoff supplies atmospheric background music on keyboard and accordion.

Bennett's adaptation moves with the momentum of a runaway freight train, and Cluff has orchestrated the action impeccably: the rise and fall of the voices and intensity level mirror what's happening in the storyline. Jennifer Zornow's lighting supplies mood and focus.

Listening to "Radio Hour: Frankenstein" is rewarding, but sharing it with an audience adds extra excitement. Hopefully, this production inaugurates a new tradition for Plan-B.