▁classification ▁of ▁E . T . ▁To zer , ▁ 1 9 9 4 ▁ ▁Category : P ty ch it aceae ▁Category : C er at it ida ▁families ▁Category : Middle ▁Tri ass ic ▁first ▁appearances ▁Category : L ate ▁Tri ass ic ▁ext in ctions <0x0A> </s> ▁The ▁Advent ure ▁of ▁the ▁Red ▁W id ow ▁is ▁a ▁short ▁Sher lock ▁Hol mes ▁murder ▁mystery ▁by ▁Ad rian ▁Con an ▁Do yle , ▁the ▁young est ▁son ▁of ▁Sir ▁Arthur ▁Con an ▁Do yle , ▁the ▁Sher lock ▁Hol mes ▁cre ator . ▁ ▁The ▁story ▁was ▁published ▁in ▁the ▁ 1 9 5 4 ▁collection , ▁The ▁Exp lo its ▁of ▁Sher lock ▁Hol mes . ▁ ▁Plot ▁ ▁Hol mes ▁and ▁Watson ▁are ▁invited ▁by ▁Scotland ▁Y ard ▁Ins pect or ▁Greg son ▁to ▁accomp any ▁him ▁to ▁an ▁ancient ▁country ▁m ansion ▁in ▁Derby shire . ▁ ▁The ▁crime ▁scene ▁remains ▁und ist urbed , ▁indicating ▁that ▁the ▁lord ▁of ▁the ▁man or ▁has ▁been ▁dec ap itated ▁by ▁the ▁gu ill ot ine ▁in ▁his ▁own ▁museum . ▁ ▁His ▁head ▁and ▁his ▁cousin , ▁Captain ▁L oth ian , ▁are ▁both ▁missing , ▁along ▁with ▁a ▁horse ▁from ▁the ▁stable . ▁ ▁Hol mes ▁anno ys ▁a ▁local ▁police ▁inspect or ▁named ▁Daw lish ▁by ▁ling ering ▁over ▁the ▁crime ▁scene , ▁but ▁quickly ▁resol ves ▁the ▁mystery . ▁ ▁" M ost ▁instruct ive ," ▁observed ▁Hol mes . ▁" As ▁I ▁understand ▁your