Sarah's annoyed when she can't get dressed for work as she can't find any of her clothes. Annie is surprised that Jack is letting Joe go off on holiday at lambing time. Mark offers to help at the farm. Jack discovers that Annie has taken Sarah's washing down to Kathy's. Nick finds dead fish in the river at Home Farm. Zoe tells Alan that she thinks she knows what's wrong with Seth, but he isn't interested and patronises her. Sarah collects her washing from Kathy. Nick discovers the weed killer was responsible for dead fish. Zoe is relieved to find a sympathetic ear in Jack. Dolly arrives at work late and asks Kim for time off to find a childminder for Sam. Kim tells her to sort it out in her own time. Jack explains how slurry works to Zoe. She suspects Seth has been affected by Cryptosporid