Theory

S04 E01 • Thursday, Sep 12, 1968 • Sep 12 • 50m

The No. 11 District squad has just completed a rearrangement of their Headquarters accommodation, taking over the house next door to provide extra space; and to bring Gilbert and Barlow into closer proximity with Watt and his team.

Proof

S04 E02 • Thursday, Sep 19, 1968 • Sep 19 • 50m

Bird Of Passage

S04 E03 • Thursday, Sep 26, 1968 • Sep 26 • 50m

See The Rabbit

S04 E04 • Thursday, Oct 3, 1968 • Oct 3 • 50m

Take Them In Singles

S04 E05 • Thursday, Oct 10, 1968 • Oct 10 • 50m

Red Herring

S04 E06 • Thursday, Oct 17, 1968 • Oct 17 • 50m

Five Pairs O' Hands

S04 E07 • Thursday, Oct 24, 1968 • Oct 24 • 50m

Minor Incident

S04 E08 • Thursday, Oct 31, 1968 • Oct 31 • 50m

An Old Song

S04 E09 • Thursday, Nov 7, 1968 • Nov 7 • 50m

Big Boats, Little Boats

S04 E10 • Thursday, Nov 14, 1968 • Nov 14 • 50m

For A Rainy Day

S04 E11 • Thursday, Nov 21, 1968 • Nov 21 • 50m

Assistance

S04 E12 • Thursday, Nov 28, 1968 • Nov 28 • 50m

Equal Status

S04 E13 • Thursday, Dec 5, 1968 • Dec 5 • 50m

Obstruction

S04 E14 • Thursday, Dec 12, 1968 • Dec 12 • 50m

Going Quietly

S04 E15 • Thursday, Dec 19, 1968 • Dec 19 • 50m

On Christmas Day In The Morning

S04 E16 • Friday, Dec 27, 1968 • Dec 27 • 50m

Departure

S04 E17 • Thursday, Jan 2, 1969 • Jan 2 • 50m

Cross Reference

S04 E18 • Thursday, Jan 9, 1969 • Jan 9 • 50m

Run For The Hills

S04 E19 • Thursday, Jan 16, 1969 • Jan 16 • 50m

Pressure

S04 E20 • Thursday, Jan 23, 1969 • Jan 23 • 50m

A Quantity Of Gelignite

S04 E21 • Thursday, Jan 30, 1969 • Jan 30 • 50m

Critical Path

S04 E22 • Thursday, Feb 6, 1969 • Feb 6 • 50m

Persistence

S04 E23 • Thursday, Feb 13, 1969 • Feb 13 • 50m

Second Chance

S04 E24 • Thursday, Feb 20, 1969 • Feb 20 • 50m

How's The Wife Then ?

S04 E25 • Thursday, Feb 27, 1969 • Feb 27 • 50m

Right To Search

S04 E26 • Thursday, Mar 6, 1969 • Mar 6 • 50m

Proved Connection

S04 E27 • Thursday, Mar 13, 1969 • Mar 13 • 50m