Sgt. Clark
Police hunt for mental hospital out patient Simon Lacey, who has been unwittingly handing out barbiturates to children as sweets.
Harris
When a woman begins to investigate her husband's mysterious death in a plane accident she discovers the involvement of a woman known simply as Diana.
Mr. Briggs
A small boy, Dickie Goodwin, finds some strychnine pills mixed with sweets in a stolen car left in a deserted garage. With them he buys his way into the Rocket Gang. Brian, the leader, shares out the pills for swaps next day. One of the gang eats hers and collapses. The police frantically search for the pills and a broadcast appeal is made. Brian hears this and reaches the gang at Battersea funfair just in time to save them.
A woman is found murdered in a house along the coast from Brighton. Local detectives Fellows and Wilks lead an investigation methodically following up leads and clues mostly in Brighton and Hove but also further afield.
