Money, electronic devices and medical equipment are among the items snatched from wards.
Beryl Purdy was killed at her home on the Quantock Hills by a man who escaped a secure unit.
Peter Dervin says he warned Broomfield Hospital staff not to leave his son alone before fatal fall.
Staff committed a "gross failure" in their care of Gregory Dervin, a coroner says.
The MP for Chelmsford is demanding answers over what she says is a "deeply distressing" incident.
Area coroner Sonia Hayes says she is "shocked and disappointed" in staff at Broomfield Hospital.
An inquest hears nurses were told multiple times that Gregory Dervin was unsteady before his death.
Puppies in training to be guide dogs visit Leeds Castle to experience "a different environment".
The organisation's chief executive admits patients and staff are being failed.
