Zinnie suspects Dan and Stella of having an affair. Dan denies it but tries to buy her silence with promises of career development. Will Zinnie do the right thing, or will she look out for her own best interests? Grace reveals a disturbing truth to Josie about her late father in an effort to bring them closer, but it ends up driving more of a wedge between them. With Kirsty and Angus also making her life difficult, Grace feels more alone than ever. Is Alan really worth it?