"Grendel" is an English language science fiction short story written in 1968 by Larry Niven. It is the fourth in the series of Known Space stories featuring crashlander Beowulf Shaeffer. The short story was originally published in Neutron Star (1968, together with Neutron Star 1966, At the Core 1967, Flatlander 1968, The Handicapped, The Soft Weapon and A Relic of Empire), and Crashlander (1994).

Beowulf "Bey" Shaeffer is on a flight between Down and Gummidgy when the ship's captain, Margo Tellefsen, announces that she is dropping of out hyperdrive so passengers can witness a starseed setting sail. Just after this happens, all passengers are knocked out by a gas introduced in the ship's life system; while no cargo is missing, a Kdatlyno touch sculptor named Lloobee has gone missing...

Beowulf Shaeffer stories

Neutron Star, the first story in the Beowulf Shaeffer series.
At the Core, the second story in the series.
Flatlander, the third story in the series.
Grendel|Grendel, the fourth story in the series.
Borderland of Sol, fifth story about Beowulf Shaeffer
Procrustes, the sixth story in the series.
Ghost, the framing story in the collection Crashlander.
Fly-By-Night, the seventh story in the series, written after Crashlander.

More: Wikipedia,

Reference: Beowulf (Wikipedia), Grendel (Wikipedia), Beowulf poem, Beowulf in swedish,