Bernice Summerfield Anthologies The Two-Level Effect Sets: Bernice Summerfield Anthologies More votes needed! TARDIS Wiki Share this page {{ shareFeedback }} Copy link {{ copyFeedback }} Overview Reviews Released September 2006 Written by Eddie Robson Publisher Big Finish Productions Login to track and rate! Characters Bernice Summerfield Jason Kane Bev Tarrant Peter Summerfield Where to find The Two-Level Effect: Collected Works Collected Unowned ⊖Saved to Wishlist ⊕Save to Wishlist