watchful

Under the watchful eye of doctors, Chris started by eating a fraction of a milligram of peanut powder mixed with yoghurt.

We could see into that Holiday Inn through its plate glass windows and observe cops walking around its lobby with billy clubs, keeping a watchful eye on us.

Because Marple and Poirot are trademarked by a watchful Christie estate, there have been no new stories added to the originals; they are just adapted, again and again, sometimes faithfully, often very loosely.

Documents that, these days, are kept under the watchful eye of CCTV.

She was always serious, watchful, with an eye on her party's and her own future.