Mr. Selfridge
Mr. Selfridge's life plays out in the 1920s when Season 4 airs.Facebook/PBS Masterpiece.

The last and final season of "Mr. Selfridge" is upon us, and fans hope to see the protagonist Harry Selfridge (Jeremy Piven) settle down in the latest instalment. However, the department store owner's predicament will be in stark contrast to that of a family man when Season 4 episode 1 airs.

To be sure, the action in Season 4 of the period drama takes place in 1928, and much of the plot is an ode to the roaring 20s. The premiere episode begins with Harry's womanising and gambling addiction, which takes place in Victor's nightclub.

The department store owner becomes smug, and in many ways insufferable, to most around him. This is seen particularly in his relationship with his son Gordon (Greg Austin). Harry continues to be blind to his son's lack of interest in managing the provincial stores. He does not bother meeting Gordon even after setting up an appointment.

This lack of sympathy from his father upsets him, but Gordon's allegiance to the store overrides every negative feeling he harbours towards his dad.

As episode 1 progresses, Gordon's commitment to Selfridges becomes apparent when he speaks to the new board member, Mr Keen (Oliver Dimsdale), and apologises on behalf of his dad's insolence. It remains to be seen if the newest member of the Selfridges' board of directors will listen to Gordon's overtures.

Will Mr Keen take his revenge on Harry? Will he spiral out of control as Season 4 progresses? These are some questions fans want answers to.

"Mr. Selfridge" Season 4 episode 1 airs Sunday, March 27 at 10 p.m. EST on PBS Masterpiece. You can live-stream the episode via PBS Masterpiece's website.