Police are searching for Foyle's War actress Honeysuckle Weeks, who has been missing since Thursday night amid concern for her welfare.
The 36-year-old was last seen in Graylingwell Drive, Chichester, West Sussex, at 9pm on Thursday and was reported missing an hour later, Sussex Police said.
Detective Kate Witt said: "We are concerned about Honeysuckle as her recent behaviour has concerned family and friends and she has expressed to them she is feeling anxious.
"Although she travels around a lot and has links in London and has family in Wiltshire, it is unlike her not to be in touch with family.
"If you read this Honeysuckle, please get in touch to let us know you are okay."
Weeks, from the village of Petworth in West Sussex, was wearing a blue anorak and faded blue jeans when she was last seen.
Police said she is around 5ft 4in and has cropped ginger/blonde hair, and they urged anyone with information about her disappearance or who may have seen her to contact them on 101.
Her agency The Artists Partnership said it is currently "unable to get hold of Honeysuckle".
It added that she had recently finished working on shooting Lewis for ITV and Sky mystery The Five.
The actress is best known for her portrayal of the character Samantha Stewart in the wartime drama Foyle's War, starring in the ITV show from 2002 to 2010 and appearing again in 2013 and 2015.
She has also appeared in TV favourites The Bill, The Inspector Lynley Mysteries and Death In Paradise.
Earlier this year the actress was reportedly ordered to wear an electronic tag after she was caught speeding on the A3 in south-west London in August 2015.
A child in the back seat was not wearing a proper seat belt and it emerged she was already banned from driving.
Weeks married hypnotherapist Lorne Stormonth-Darling in a Buddhist ceremony in the Himalayas in 2005 and the couple have a child, Wade, who was born in 2011. They live in London.