When Elliot discovers Greg and Mary-Claire in a compromising situation, Greg's position is in jeopardy. Greg goes out of his way to prove to Elliot how talented he is, but at the risk of a patient's life. Donna is back on the ward, angry and bitter about Kieran. Her actions alienate her staff, anger Mark, and ultimately cost a colleague their career in Holby. Chrissie and Sacha are getting closer, but Chrissie fears that Sacha still has feelings for her. She distances herself from him, leaving him devastated.