Dan has the chance to perform at the Folies Bergeres in Paris but Jo is annoyed he did not consult her and he leaves on his own. Charlie decides to go after him to change his mind and on the train confides in the sympathetic Mrs Pickering his fears and doubts about his own marriage - unaware that Caroline has followed him and has overheard. Charlie seems unable to convince Dan and,returning home,appreciates he should not have interfered in a matter that was just between Jo and Dan. However Dan returns and suggests a workable compromise (thetvdb.com)