(at around 41 mins) Steed arrives at the building where Tara King is preparing to jump out of the window. Tara King sees Steed who looks up at Tara King. (at around 42 mins) Steed is pulling Tara King back into the building after she jumps, we look at the ground only Steed's car has disappeared.
The so-called microdots Steed finds in the books are merely "coin-cell" watch batteries.
After Martha shoots "Rodders", we see (briefly) that her pistol is missing its upper parts, including the barrel, firing chamber and firing pin.