Appropriate Action is the 1564th episode of The Bill.
A teenage boy is found badly beaten, and a young girl, Lisa, from the same school is missing. D.C. Webb shows little interest in the case, so Sgt. Cryer investigates the girl's disappearance himself. A local 'photographer', Alan Morton, is the main suspect, as he has an obsession with Lisa and her friends, and he is arrested when P.C. Harker spots him acting suspiciously by the canal. When Lisa turns out to have been hiding out at a friend's house the whole time, Cryer must rush to prevent Lisa's father from taking the law into his own hands by going after the innocent Morton.
- Eric Richard as Sgt Bob Cryer
- Alex Walkinshaw as PC Dale Smith
- Jane Wall as PC Di Worrell
- Chris Simmons as DC Mickey Webb
- Steven Hartley as Supt Tom Chandler
- Ged Simmons as DI Alex Cullen
- Matthew Crompton as PC Sam Harker
- Tony O'Callaghan as Sgt Matthew Boyden
- Lisa Geoghan as PC Polly Page
- Andrew Paul as PC Dave Quinnan