LEST

Wed, 24 Nov '21

Just in case

Sun, 31 Oct '21

Just in case

Wed, 21 Apr '21

Sci-fi sidekick ... or a hint to 42- and 53-Across

Sat, 3 Apr '21

Cautionary word

Thu, 25 Mar '21

Just in case

Fri, 12 Mar '21

To avoid the risk that

Sun, 10 Jan '21

In the event that