Natural Science

A Tenth Doctor story. After the events of the Titanic, The Doctor has allowed two years to pass and has reunited with Martha yet again- because someone had left Heisenberg crystal meth in his TARDIS, with a cryptic message. This draws them to New Mexico, where they team up with Walter White and Jesse Pinkman, and unravel a horrifying plot that could provoke an Orwellian regime.