Zoe Hanna (née Walker; born 23 August 1974) is a senior consultant in emergency medicine who worked in the emergency department of Holby City Hospital from 2007 to 2016. She arrived in the department at the end of 2007, and became Clinical Lead in 2013, before stepping down and becoming the Deputy Clinical Lead under new Clinical Lead, Connie Beauchamp. Zoe was married to Hospital Porter, Max Walker, during which the wedding venue is set ablaze after Max Walker and Louis Fairhead are involved in an altercation, knocking over a lamp. During this, Zoe has gone with Dylan on one of the wedding boats, not knowing that onboard, is a container of gas which explodes and sends Zoe flying into the waters. Zoe is saved by Charlie Fairhead, which prompts her to evaluate her life and leaves Holby to go to America.