Hatshepsut assassinated Tuthmoses II ??

Dec 2009
Qui bono ? [If they benefit, then they are behind it] -- Latin proverb
Thutmose II was lesser royalty, and yet a youth, when he became King of Kemet [Egypt]:
Thutmose II was the son of Thutmose I and a minor wife, Mutnofret. He was, therefore, a lesser son of Thutmose I, and chose to marry his fully royal half-sister, Hatshepsut, in order to secure his kingship... Thutmose II was still a minor at his accession*.
So, it seems, Thutmose II was tentative & cautious as king:
As Pharaoh, he was only a shadow of the powerful man his father [Thutmose I] had been. His reign was mostly uneventful**.​
And, his wife, the fully royal Hatshepsut, was apparently the proverbial power behind the throne:
[Thutmose II] was probably strongly influenced by his wife, Hatshepsut... Hatshepsut was the real power behind the throne during Thutmose II’s rule, because of the similar domestic and foreign policies which were later pursued under her reign and because of her claim that she was her father’s intended heir. She is depicted in several raised relief scenes from a Karnak gateway dating to Thutmose II's reign both together with her husband and alone. She later had herself crowned Pharaoh several years into the rule of her husband's young successor Thutmose III; this is confirmed by the fact that "the queen's agents actually replaced the boy king's name in a few places with her own cartouches" on the gateway*.​
However, Hatshepsut did not bear a boy to Thutmose II, whilst some secondary queen-competitor did:
Thutmose II fathered [a daughter] Neferure with Hatshepsut, but also managed to father a male heir, the famous Thutmose III, by a lesser wife named Iset before his death*.​
And, quite conveniently for Queen Hatshepsut, the Pharaoh died, before his popular son and successor had even turned 12. This seemingly sudden death caused chaos, as it posed profound problems for the succession. But, as the ranking dowager queen, Hatshepsut was named Regent with her boy-king step-son, until he came of age**.
* Wikipedia -- Thutmose II
** HC Egypt's Great Queen (DVD)
Non-naive interpretation of such circumstantial evidence, strongly suggests the possibility of participation, by Hatshepsut, in the untimely death of Pharaoh Thutmose II, father of famous Thutmose III*. Indeed, during his reign, apparently after her influence had finally waned, Pharaoh Thutmose III aggressively eradicated her name & memory, as if he blamed her for his father's death. Once could compare Hatshepsut's proposed power-play, to the Harem Conspiracy which would kill Pharaoh Ramses III, some 300 years later, wherein women killed their king in competition for the throne (for their sons).
* Logically, it was Napoleon who, living 3000 years afterward, was the "Thutmose III of France".
Dec 2009
According to the History Channel documentary Ancients Behaving Badly -- Cleopatra (DVD), Cleopatra & Marc Antony would engage in competitively dramatic displays of recklessly wanton & wasteful spending, to prove their wealth. In one case, Cleopatra took off a pearl ear-ring, worth 10,000,000 sesterces, and dissolved it in her (acidic) wine.

Tests show, however, that pearls would take days to dissolve. Perhaps, then, Cleopatra cunningly tricked Marc Antony, using the dim lighting & romantic mood of their dining, to proclaim a fake pearl, for the real original? Perhaps she secretly had some "sugar cube" (say) made out into the shape of a pearl, and then dissolved the fake, whilst boasting about the real original?