The article discusses the plight of Dr. Khaled El Serr, a surgeon from Gaza who went missing after being arrested by the Israeli military. It highlights that over 300 health workers from Gaza are in Israeli detention, with some reporting torture and others dying in custody. The Israeli military denies deliberately detaining doctors but says they detain suspects of terrorist activities. The article also mentions the devastating impact of the war on Gaza's healthcare system, with hospitals under attack and medical workers detained or killed at higher rates than the general population. The United Nations has raised concerns about the mass detention and enforced disappearances of medical staff. The article emphasizes the desperate search for information about Dr. El Serr and the campaign by Amnesty International to urge Israeli authorities to release him and disclose the whereabouts of other detained health workers. It also highlights the dedication and commitment of doctors like Dr. El Serr, who went above and beyond to serve their community.