Most families find out they cannot get in during the worst possible minute, with a neighbor calling from the sidewalk and an ambulance waiting. The keys were on your ring for years. Nobody checked whether they still turn. This piece is about finding the gap while it is still a Tuesday afternoon and nothing is wrong.

Local option: New Plan Care gives families in the St. Louis area in-home help so a parent can stay home: companionship, help with bathing and dressing, meals, and overnight care. Call (314) 405-0887.

Signs your access has quietly ended

Watch for these: a key that goes in but does not turn all the way, a deadbolt that was added since your last visit, a garage or side door you have never tried, a keypad code that no longer works, a spare that was given to a neighbor who has since moved, or a copy that was made for a helper who is no longer around. Any one of these means you do not have the way in you think you have.

Test every door, in daylight

Go to the house with the full ring and try every key on every door: front, back, side, garage, and any shed or gate you might need. Turn each key fully and check that the door opens and closes without forcing. Note which key opens which door on a card kept with the ring. If a key sticks, do not force it. Write down which lock it was and move on to the next one.

Ask the people who hold a copy

Call each person who may hold a key or code. Ask whether they still have it, whether they have used it recently, and whether they would answer the phone if you needed in. A key in the wrong hands is a risk, and a key in the right hands that no one answers is no help either. Ask your father only what he is willing to say. Do not argue about the lock he chose.

Check the paper trail

Find the place where the spare is kept, and confirm it is still there. If there is a lockbox or keypad, check the code and the battery. Write the answers on one page: who holds what, where it is kept, and how you would get in if the first option failed.

The next move

Tonight or tomorrow morning, try your key on the side door and the garage door, the two places families most often forget. Then write the one-page access list and call the first person who holds a copy. If the access list shows a gap you cannot close on your own, the Start Here page lays out the first steps in order.