Theory

E1

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

E2

Bird Of Passage

E3

See The Rabbit

E4

Take Them In Singles

E5

Red Herring

E6

Five Pairs O' Hands

E7

Minor Incident

E8

An Old Song

E9

Big Boats, Little Boats

E10

For A Rainy Day

E11

Assistance

E12

Equal Status

E13

Obstruction

E14

Going Quietly

E15

On Christmas Day In The Morning

E16

Departure

E17

Cross Reference

E18

Run For The Hills

E19

Pressure

E20

A Quantity Of Gelignite

E21

Critical Path

E22

Persistence

E23

Second Chance

E24

How's The Wife Then ?

E25

Right To Search

E26

Proved Connection

E27