Although the Lynda and Spike story arc runs throughout the series, most episodes feature self-contained stories and sub-plots. Amongst lighter stories, such as one about Colin accidentally attending a funeral dressed as a pink rabbit, the show tackled many serious issues. Jeff Evans, writing in the "Guinness Television Encyclopedia", writes that the series adopts a "far more adult approach" than "previous efforts in the same vein" such as "A Bunch of Fives." Some critics also compared it with "Hill Street Blues", "Lou Grant" "and other thoughtful US dramas, thanks to its realism and its level-headed treatment of touchy subjects." The first series approached solvent abuse in "How To Make A Killing", and the NSPCC assisted in the production of the "Something Terrible" episodes about child abuse. The team were held hostage by a gun enthusiast in series three's "The Last Word", while the final episode approaches drug abuse. The issue-led episodes served to develop the main characters, so that "Something Terrible" is more "about Colin's redemption selfish capitalist, rather than Cindy's abuse."