The first of several episodes of this mini-series in which Noel Harrison appears as unscrupulous doctor Freddie Foxley. In the 1938 movie based on the same novel, the part was played by his father, Rex Harrison.
Although this adaptation names Dr. Manson's friend as "Dr. Freddie Foxley", as he is called in A.J. Cronin's novel, the 1938 film version calls him "Dr. Freddie Lawford" whilst the other 1960 television adaptation (shown as a single play on American TV) calls him "Dr. Freddie Parker".