Tempus Sinister — Simon A. Forward

The Farce Of The Dark Side. Villains are the new Heroes in this epic Sci-Fi series. Chronocide. A long-cherished ambition for Professor Doomladen. Time is relative and in his estimation she's a crabby, demanding old aunt, past overdue for bumping off. Dexter Snide has murderous intentions towards other targets - Six and the PHUX Corporation who have stolen his TV station and his Tree, obliging Evil UnLtd to slum it in a derelict girls' school in the branches of a mere Sapling attached to the hull of a Myxomatosan Death Warren. In an imperfect present, one means of getting Evil's future back on track is to turn back the clock. Dexter's uber-devious scheme provides a tempting opportunity for Doomladen to achieve his ultimate goal. To kill Time. But such temporal tampering is a sure way to attract the attentions of new enemies. Like a certain mysterious traveller in a blue box... Worse, Time is a bitch. Mess with her and she messes back.