Bernice Summerfield Anthologies Excalibur of Mars Sets: Bernice Summerfield Anthologies More votes needed! TARDIS Wiki Share this page {{ shareFeedback }} Copy link {{ copyFeedback }} Overview Reviews Released Monday, September 20, 2010 Written by Jim Smith Publisher Big Finish Productions Time Travel Past Locations Earth Mars Login to track and rate! Characters Bernice Summerfield Winifred Bambera Ancelyn Merlin [Battlefield] Where to find Excalibur of Mars: Present Danger Collected Unowned ⊖Saved to Wishlist ⊕Save to Wishlist