Clues by Imogen and Grid by Gin. Between the Scylla of what looks to be a monstrous construction by Shark for October and the Charybdian vortex of Sirius’s force-field we find… a normal puzzle, by Imogen and Gin. However, Imogen can be a most proficiently awkward concealer of what he really means, and Gin’s grids always present their themes in ingenious ways.