Watch Z Cars online: Episode 11 Daylight Robbery

When a Newtown pillar box begins to belch smoke Graham's first reaction is that someone has been posting red hot love letters. But by the time thirteen pillar boxes have been burned out he and Lynch are on the trail of an unusual kind of pyromaniac. Meanwhile Sgt. Watt is keeping an eye on Oliver Snow, a visitor from London who goes out of his way to be offensive.

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