Episode 5 of "Sexy Beast" kicks off with Gal, jogging with purpose through an opulent neighborhood lined with grand mansions. The scene swiftly transitions to Gal meticulously scrutinizing the vicinity, unveiling his reconnaissance mission for the impending heist. He sketches out his daring scheme in full: infiltrating the adjacent abode and burrowing a passage from their basement into Sir Stephen Eaton's impregnable vault room, cleverly masking the cacophony with a fireworks display.
Just as Gal and Don, now disguised as fellow joggers, are immersed in their plot, an unforeseen twist arises. They are abruptly apprehended by the IDF for inadvertently wandering onto the premises of the Israeli Consulate, facing a potential twelve-year stint behind bars. In a stroke of genius, Don conjures an ingenious alibi. He boldly accuses one of the Israeli soldiers of inappropriate touching, emphasizing his desire to keep the British authorities at bay, stating, "It’s not my style." He persuasively suggests that it would be in everyone’s best interest to sweep the incident under the rug, and remarkably, his plan succeeds. Gal is thoroughly impressed, while Don beams with satisfaction at his clever maneuver.
Elsewhere, Don embarks on a different mission: assisting his sister Cecilia in securing a permit to transform their tacky arcade into a sophisticated casino. Clad in a suit and tie, he diligently rehearses his segment of the presentation, laden with intricate details regarding the structural soundness of the building. Cecilia watches him with a beaming smile, pride and happiness emanating from her as she acknowledges the diligent effort he has put in.
However, her unwavering loyalty to her brother is put to the test when she encounters Teddy Bass and faces the dilemma of whether to consent to his plan to eliminate Don. Caught in a turmoil of inner conflict, she even engages in a heated debate with her own reflection in the mirror, indicating her struggle with the potential consequences. Meanwhile, Teddy harbors no immediate intent to slay Don, as he finds him instrumental to their endeavors. He simply informs Cecelia that he was probing her loyalty.
Dee Dee strives to mend fences with her estranged family during a Sunday dinner, but her father coldly rejects her advances and ultimately expels her from the house, while her mother stands by, smiling through tears yet taking no action. Her sister, the one she had maintained a fragile connection with, is revealed as the informer who disclosed Dee Dee's involvement in pornographic filmmaking to their father. Flashbacks depict a heart-wrenching scene where her father forcefully ejects a young Dee Dee from their home, banishing her forever.
Elsewhere, Gal confronts Dee Dee about her persistent involvement in pornographic films, prompting her to accuse him of condemnation and to question why he doesn't abandon his own criminal activities. Gal, in a moment of vulnerability, confesses his love for her, but she sternly discourages him, insisting that their relationship is doomed. Following this emotional encounter, Gal storms into a pub and viciously beats up a man with a sock filled with snooker balls, labeling him as scum before exiting with a sense of defiance.
The episode concludes on a note of impending doom for the heist plans, as Don meets with Gal to convey their bleak situation, acknowledging their desperate plight. But just when all seems lost, Gal's mentor Mace emerges from his post-prison retirement to lend a helping hand. Stepping into the fray, he reveals that their path to success will be through the treacherous confines of the sewers, igniting a spark of hope amidst the mounting despair.
